Sunu band Quick Start

Sunu band Quick Start Guide


Thank you for choosing Sunu. This quick start guide will help you become familiar with the Sunu band and its basic operation. The quick start guide will show you the following:

  1. What’s included in the box.
  2. Charging your Sunu band.
  3. Wearing the Sunu band.
  4. The Sunu band Interface.
  5. Interface Operation.

Included in the Box

The following is included within the Sunu band box:

  • One Sunu band Sonar bracelet.
  • One micro USB to USB cable.
  • A welcome insert with inspirational quote.

Getting to Know Sunu band

Sunu band is the first smart mobility aid that improves mobility for the visually impaired. Sunu band combines a sonar or echolocation sensor with a high resolution vibrating actuator to gently inform the user about objects or obstacles up to 15 feet (5 meters) away. Sunu band augments awareness of the user’s personal space and reduces accidents, ultimately providing a more confident and enjoyable mobility experience. On top of that Sunu band comes with additional and upgradable functions thanks to its integration with the Sunu App:

  • Haptic watch: discretely tell time with vibratory pulses
  • Vibratory alarms: set up alarms from the App with different vibratory patterns on the band.
  • Obstacle detection: The sonar sensor enables you to perceive objects or obstacles that are within your environment.
  • Unlimited firmware updates: keep your band updated with the latests optimizations to the core functions of the Sunu band

Parts of the Sunu Band

It is important that you familiarize yourself with the different parts of the Sunu band. The image below shows the parts of the Sunu band as viewed from its side, top and bottom


image showing the parts of the Sunu band

A: The sonar sensor is a round metal cylinder embedded on the Sunu band. The sensor is a transducer that emits ultrasounds as well as detects the echo or reflected sound-waves that bounce back from objects or obstacles that are within the selected range

B. Sunu band has two (2) buttons located on one side of the device. The buttons allow the user to interact with the Sunu band interface. The HOME button is closest to the sonar sensor and has rough texture on its surface. The App-Menu button is furthest away from the sonar sensor and has a smooth texture on its surface.

C: The flat top surface of the Sunu band has a touch-pad. The touch pad allows users to interact with the interface.

D: The micro-USB inlet is located underneath the Sunu Band (opposite side to where the sonar is located).

E: That Sunu band comes with a standard 20mm hypoallergenic silicon strap (black) and silver buckle.

Charging the Sunu band

You should re-charge Sunu band when you first receive it. Sunu band’s rechargeable battery lasts up to 12 hours with average use. To extend the battery life of your Sunu band we recommend that you recharge it for 3-4 hours. Sunu band will reach full charge within 3-4 hours. To re-charge the Sunu band:

  1. Connect the corresponding end of the micro-USB cable to the micro-USB inlet that is located underneath the Sunu band.
  2. Connect the USB end of the cable to any USB power adaptor.
  3. Allow 3-4 hours to reach full charge.

Image showing how to connect the micro-USB cable to the micro-USB inlet on the Sunu band



Wearing the Sunu band

You can wear Sunu band on either hand, just like any watch. It is important to wear Sunu band with the sonar sensor on the same side as your thumb, as shown in the image below. Then adjust the belt and buckle until the Sunu band fits comfortably and securely around your wrist. We recommend that you wear Sunu band on the opposite hand to which you handle other travel aids such as a white cane or guide dog.

Diagram illustration of how to wear the Sunu Band


The Sunu band Interface

Sunu band’s interface works similarly to a smartphone or tablet.  Sunu band has:

  • Two buttons located at one of the sides of the Sunu Band.
  • The touch-pad, which is the flat top surface of the device.

The Buttons:

image showing the buttons on the Sunu band


  1. The HOME button is closest to the sonar and has a rough texture.
  2. the APP/MENU button is furthest from the sonar and feels smooth.

The two ways in which we interact with the buttons are:

  • Press: Push and immediately release the button.
  • Press and hold: Push button and maintain pressed for 3 seconds before releasing.

The touch-pad

You interact with the touch pad just like you would with any smartphone or tablet surface. The two primary kinds of interactions you will be doing with the touch pad are:

I. Swipe Interactions:

  • Swipe-Out: Slide finger in the direction that is going away from the sonar sensor.
  • Swipe-In: Slide finger in the direction towards the sonar sensor.



II. Touch Interactions

  • Tap and hold: Place your finger on the touch-pad, hold for 3 seconds, and release.
  • Double-Tap: Touch twice on the touch-pad with your finger.



Interface Operation


Sunu band’s HOME button is the equivalent of the lock screen button on a smartphone. It basically exits from any active app and goes into a standby or low power mode, which we will refer to as the HOME. Sunu band’s HOME allows you to use the Haptic Watch by swiping on the touch pad. The haptic watch enables you to read the time via a series of vibration patterns.

When you press the HOME button, you will immediately feel a soft long pulse to indicate that Sunu band is now in the HOME mode. Sunu band will go into sleep mode after the first minute has passed.

Sunu band Apps

Apps on the Sunu band allow you to access certain features or perform specific functions. Application on the Sunu band are managed from the Sunu mobile app for iOS and Android (coming soon). Sunu band come with three apps:

  1. Haptic Watch (access from within HOME).
  2. Vibratory Alarms (managed from within the mobile app).
  3. Obstacle Detection.

You can turn ON/OFF, customize and manage specific apps or functions on the Sunu band from within our mobile app for iOS and Android. please refer to our mobile app quick start guide for details.

Haptic Watch

Sunu band’s haptic watch allows you to know the time via a series of short or long pulses. You may choose to read the hour or the minutes depending on how you swipe on the touch pad. To access the haptic watch:

  1. Press the HOME button. you will immediately feel a soft short pulse to indicate that you are now in the HOME mode. The haptic watch will be available for one minute before the band goes to sleep. If Sunu band is in sleep mode, simply press the Home button again to begin using the haptic watch.
  2. Begin reading the time by: Swipe-In to read the hour and/or Swipe-Out to read the minutes. A vibratory pattern will follow indicating the hour or minutes.

Reading the Time

To tell the time, Sunu band uses a very simple numeric system similar to roman numbers or the abacus, where a long pulse equals 5 and a short pulse equals 1. We then add the number of short and long pulses that we feel to calculate the time.

image, sunu band reads the time via a series of short and long pulses.


I. Reading the hour:

Swipe-In on the touch-pad to read the hour. You will immediately feel a series of pulses. For every:

  • Short pulse: add +1 hour to the time.
  • Long pulse: add +5 hours to the time.

II. Reading the Minutes:

Swipe-Out on the touch-pad to read the minutes. The minutes information is provided in two parts separated by a long pause:

  1. Sunu band tells the Tens-past or how many 10’s of minutes have passed the hour, (10, 20, 30, 40, 50 minutes). If there are no vibrations, it means that the time is either exactly on the hour or less than 10 minutes have passed the hour.
  2. Sunu band tells the ones-passed or how many minutes passed the hour. If there are no vibrations, it means that zero minutes have passed like in the case when the time is exactly on the hour or at exactly a multiple of ten-passed.

We add up these two values of tens- and ones-passed to get the total minutes. Here is how we do it:

1. Tens-past, (10’s) of minutes passed the hour. For every:

  • Short pulse: add +10 minutes to the time.
  • Long pulse: add +50 minutes to the time.
  • No vibration: indicates that the time is either exactly on the hour, or less that 10 minutes have passed the hour.

2. Ones-passed, for every:

  • Short pulse: add +1 minute to the time.
  • Long pulse: add +5 minute to the time.
  • No vibration: means that zero (0) minutes have passed like in the case when the time is exactly on the hour or at exactly a multiple of ten-passed.

Adjusting Time Preferences

Sunu band derives the time from your iOS phone when the device is paired with the mobile app.

Obstacle Detection App

The Obstacle Detection app activates the Sunu band’s sonar sensor which detects objects or obstacles that are within your environment up to 15ft (5 meters) away. Sunu band detects objects in ‘real time’. Sunu Band provides haptic vibration feedback that informs the user about their proximity to an object. Here is how the sonar or echolocation sensor work:

The sonar transducer emits a high-frequency sound wave that bounces back from an object(s) that are within range of the sonar. The resulting sound waves or echos that bound back are detected and processed to obtain information about the object’s proximity. This information is converted into vibratory patterns or pulses that you feel on your wrist. Generally, the vibration pulses become more frequent as an object is close or less frequent as the object is farther away.

Our mobility guide will introduce you to the principals of echolocation, and you will practice detecting objects with the Sunu band. 

The Obstacle Detection app allows you to:

  • Activate the sonar sensor and vibration feedback.
  • Switch between sonar modes.

Activating the Obstacle Detection App

  1. Press APP/MENU button to activate the sonar. When you press the button, Sunu band will immediately vibrate to indicate that the app is now active.
  2. After a brief pause, you will feel one or two pulses to indicate the sonar mode.
  3. After another short pause the Obstacle Detection App will be active and working in the selected mode. You can aim the sensor in different directions or pass your hand in front of it to make sure that it is working properly.

Switching Between Sonar Modes

The Sunu band has two sonar operating modes:

  1. Short range (indoor) mode: allows you to detect obstacles within 4-5ft or 1.5 meter range and has low sensitivity. This mode is ideal for navigating indoors and crowded spaces. it’s low sensitivity allows for gaps, doorways and thresholds to be readily detected.
  2. Long range (outdoor) mode: allows you to detect obstacles within 16 ft or 5.5 meters. and has high sensitivity. This mode is ideal for navigating outdoors and wide open spaces. It’s high sensitivity is optimized to detect thin objects like tree branches and bushes.

Swiping In or Out on the touch pad switches between sonar modes.

  1. Swipe-In to switch to the short range mode. You will immediately feel 1 pulse to indicate thar this mode is on.
  2. Swipe-Out to switch to the long range mode. You will immediately feel 2 pulses to indicate that this mode is on.

Exiting the Sonar & Obstacle Detection app

  • Press the HOME button to exit and return to HOME.

Gestures Control

Gestures are simple movements of the hand that allow you to control certain functions of the Sunu band. Sunu band’s sensors tracks the position and movement of your hand to trigger, for example, an instant sleep or rapid ON/OFF of the Sunu band. Gesture are intended to help in situations where you may have your hands occupied holding your personal articles, and pressing a button is a bit cumbersome.

Your Sunu band comes with two active gesture controls that enable you to quickly SLEEP and WAKE-UP the Obstacle Detection App. This is especially useful when you are traveling and a situation arises where you don’t need the Sunu band’s Obstacle Detection App providing feedback. Gestures allow you to quickly send the band to sleep and wake-up. Here is how we do it.

Obstacle Detection SLEEP and WAKE-UP

This gesture only work when you are in any of the sonar modes of the Obstacle Detection App. You should perform the gesture with the hand that you wear the Sunu band. To send Sunu band to SLEEP:

  1. Tap twice on your hip. With your palm facing toward your hip, or tap the ‘buckle side’ of the Sunu band against your hip twice.
  2. You will feel a long pulse. This pulse begins with a strong intensity and ramps down to a soft intensity. It indicates that the Obstacle Detection mode is asleep.

To WAKE-UP the Sunu band:

  1. Tap twice on your hip. With your palm facing toward your hip, or tap the ‘buckle side’ of the Sunu band against your hip twice.
  2. The Sunu band will pulse to indicate the sonar mode that is in use.

There is another way to quickly SLEEP and WAKE-UP your Sunu band. You can do this by:

  1. Bringing your arm up to chest level.
  2. Turn your wrist until it is level, and your palm is facing down.
  3. The Obstacle Detection App will quickly SLEEP when your hand is only in this position.


  1. Return your arm to your side.
  2. The Obstacle Detection app will quickly Wake-up.
  3. Sunu band will continue working in the same sonar mode that was selected prior to sleep.


Resetting Sunu band

Sunu band can be reset to its factory defaults. To reset Sunu band:

  1. Press and hold the App/Menu button for 3 seconds, unit Sunu band begins to vibrate.
  2. Allow Sunu band to go through the reset process. This should only take about 10 seconds.
  3. Once the Sunu band is no long vibrating, it is now ready for use.

What’s Next?

We recommend that you now review the Sunu mobile app quick start guide to learn how to pair and connect your Sunu band to the Sunu App. The mobile app allows you to unlock Sunu band’s potential. With the mobile app, you will be able to customize your Sunu band and manage its apps or functions directly from your phone.

Have Questions?

Be sure to visit us at for the latest guides and learning content. If you have any questions about our tutorials or need additional assistance, please contact us at hello<at>sunu<dot>io.

Mobile App Quick Start


Your Sunu band comes with a free download of the Sunu App and is now available for iOS (Android version is coming soon). With the Sunu App, you will be able to customize your Sunu band and manage its apps and functions directly from your phone. This guide will get you started with using the Sunu App. This quick start guide will teach you how to:

  1. Log-in and create an account.
  2. Pair or link up your Sunu band.
  3. Update your Sunu band.
  4. Navigating the app
  5. Basic features of the app.

*This guide assume that you have already reviewed the Sunu band Quick Start Guide and that you have charged up your device.


Download & Install

The Sunu app is available for iOS at this time. Search for the Sunu app in the App Store and download the app to your iOS device. The Sunu app requires a:



Accessibility: The Sunu app is fully accessible via the iOS voice over feature. Please contact Sunu immediately if you find that any portion of the app, pop-ups or prompts and interactive elements are not fully accessible via voiceover.

Bluetooth: A bluetooth connection is required to use the Sunu band with the mobile app. Please activate your iOS device bluetooth from your device’s settings.

Push Notification: From time to time, notifications and alerts will be sent via the Sunu app. Please allow push notifications for the Sunu app.

Creating an Account and Login

Please review our Privacy Policy and Terms of Use before creating your account. Parents or legal guardians of children under the age of 13 must register on behalf of their child.

There are various options to creating an account with the Sunu app. You can login by connecting your Facebook or Twitter social media account. To login with a social media account:

  1. Choose which social media account to connect with, i.e. Facebook or Twitter
  2. Provide requested permission from the Sunu app to connect to your account.

You can create an account with Sunu by selecting the Sign Up option. When you select the Sign Up option, you will need to:

  1. Provide a valid email account.
  2. Create a password.

image of the Sunu app log in screen

Pair or Link Sunu band

The Dashboard

Upon successfully creating your account and logging in you are immediately taken to the Dashboard. The dashboard provides the following:

  • Sunu band Status Bar: provides an overview of a Sunu band that is connected or paired with the app.
  • Shortcut to apps: are provided in the main view area which allow you to access important features or functions.
  • Tab Menu: located at the bottom of the screen allows you to navigate the app.

 image of the dashboard screen

1. Sunu band Status Bar – Pairing Sunu band

Before pairing your Sunu band, please make sure that:

  1. Bluetooth is enabled on your phone.
  2. That the Sunu band is charged.

The status bar appears in grey when no Sunu band is paired or linked. Make sure to bring you phone close to the Sunu band. To pair your Sunu band:

  1. Tap on the status bar to enter into the Pair & Update screen.
  2. Next, tap on Pair Your Sunu band or the blue plus sign next to the Sunu band icon.
  3. Keep your phone very close to the Sunu band.
  4. A voice over will indicate the connection status once complete.

image - sunu band pairing screen


If pairing is taking to long:

  1. Press the HOME button to ‘wake up’ the Sunu band.
  2. Make sure that your phone is very close to the touch pad surface of the Sunu band.

Once you’ve paired your Sunu band, the connection status appears as linked. You can unpair your device at any time. Simply tap the ‘X’ or unpair option that is now available to unpair your device.

Now you are ready to update your Sunu band.


Updating Sunu band

It is important to maintain both your app and your Sunu band up-to-date with the latest software. From time to time, our team of engineers will make improvements and software fix in case of issues or bugs. Updating your device insures that your Sunu band keeps operating at its best.

When you first receive your Sunu band, you may need to do a device update. To update your device, tap on the Sunu band Status Bar.  You will be taken to the Pair & Update screen. If a Sunu band update is available, a blue Update Sunu band button will appear underneath the Sunu band connection status. To update your device:

  1. Keep your phone very close (almost touching) your Sunu band.
  2. Press the Update Sunu band button
  3. Voice Over prompts will guide and indicate the about the status of your update.
  4. Sunu band will do a long vibration once the update is successful.

image of the Sunu app update Sunu band screen


Congratulations! By now you’ve paired up and updated your Sunu band with the Sunu app. Future update notification will appear on the Sunu band status bar.

Navigating the App

Navigating the Sunu app is done via the menu tabs that are

located at the bottom of the screen. Tap on any of the three menus to switch between the following screens:

  • Dashboard: Provides status information about your Sunu band and quick access to certain functions.
  • Apps: allows you to install, activate and customize the apps currently active on the Sunu band
  • More: make changes to your profile, access the in-app guides and contact us for help.

image of the sunu app menu tab

I. Dashboard Tab:

The dashboard tab is the home screen. It provides important information about your Sunu band and allows quick access for you to manage certain functions on your Sunu band. The two important part of the dashboard are:

1. Sunu band Status Bar

Now let’s get to know what information is provided in the status bar. Once your Sunu is successfully paired with you phone, the Sunu band status bar provides the following information about your device:

  1. Battery level indicator: shows the current charge on the Sunu band.
  2. Bluetooth indicator: shows that a bluetooth connection between your Sunu band and phone is established.
  3. Updates or cloud icon: will indicate when a new update is ready to install.

image of the sunu app, connection status bar for sunu band

2. Short-cut Icon

You will be able to immediately begin customizing your Sunu band from within the dashboard. Two shortcut icons are provided:

  1. Obstacle Detection App: allows you to adjust the range and sensitivity for both sonar modes.
  2. Haptics: allows you to adjust the vibratory feedback intensity that you feel on your wrist.


II. Apps Tab:

Sunu band comes pre-loaded with various apps which provide distinct functionalities to your Sunu band. A list of installed apps on your Sunu band will appear within the apps menu. The apps menu allows you to activate / deactivate and customize a particular app.  In the future, new app will become available which you may choose to install on your Sunu band. The following apps are currently available with Sunu band are:

  • Time: allows you to tell time with Sunu band’s haptic watch.
  • Alarms: set vibratory alarm at any time and day.
  • Obstacle Detection: activate advanced echolocation features and adjust the sonar range and sensitivity for both sonar modes of the Sunu band.
  • Gestures: quick ON/OFF with simple movements of the hand.
  • Haptics: adjust the vibration sensations that are felt on the wrist.
  • Place Finder (Beta): connect with google maps to find and navigate to point of interest or local business in your area.

III. More Tab:

Don’t forget to check out this important part of the Sunu app for guides and help. From within the More Tab you will find the following:

  • My Profile: make changes to your profile; name, email, connected account, etc.
  • Interactive Guides: access our learning content within the app. A Sunu band Quick Start is currently available. More interactive learning content will be available in the future. Please make sure to check back periodically for additional guides and tutorials.
  • Help: send a message to our support team.
  • Share: Tell a friend about Sunu band.



Managing and Customizing Your Sunu band

The Sunu app allows you to manage and customize the apps and functions that are on your Sunu band. This is done from the Apps Tab. It is important to have bluetooth enabled on your phone when using the Sunu App. The following describes how we manage and customize apps on your Sunu band.


This app synchronizes the time on your phone with Sunu band. You Sunu band must be paired with your phone in order to use this app. The time app provides a toggle switch to ON/OFF the time sync with your phone. By default, time sync is ON.


Similar to any alarm clock, this app allows you to set a vibratory alarm for your Sunu band. Your Sunu band must be paired with your phone and the Time app must also be ON for the alarms app to work properly. From within the Apps tab you can:

  • Turn ON/OFF the alarms app from the toggle switch.
  • Tap into the alarms app to create a new alarm or manage your alarms.

image showing the various screens within the alarms app

Creating an Alarm

The alarms manager is the first screen that you will find as soon as you enter into the Alarms App. From within the alarms manager, you can:

    • Create a new alarm: Tap on the plus (+) or add new alarm.
    • Edit an existing alarm: Tap on the alarm name to edit.
    • Turn ON/OFF a specific alarm: Toggle the switch to activate or deactivate the alarm.
    • Delete an alarm: When you swipe left on the alarm name a delete option will appear.


Setting or Editing an Alarm:

Setting or editing an alarm works the same as for your phone. Changes are automatically saved or saved when you tap on the ‘back’ button. Here is how you set/edit an alarm:

  1. Time Picker: Rotate the picker wheel by swiping up/down on the screen to select the hour, minutes and AM or PM for the alarm.
  2. Repeat: Toggle the switch to select the day or days of the week for when the alarm will activate.
  3. Vibratory Pattern: Select how your Sunu band will vibrate at the time of the alarm. Toggle the switch to select among three available patterns. You can preview each vibration pattern as you toggle the switch. By default, one pattern will always be active.
  4. Snooze: Toggle the switch to enable/disable snoozing for this alarm.
  5. Alarm Name: Enter a name for the alarm in the text field or use the default alarm name provided.

Vibratory alarm on the Sunu band

Sunu band will begin vibrating with the distinct pattern at the time the alarm was set. To acknowledge or turn OFF the vibration alarm:

  1. Press the HOME button on the Sunu band.

To snooze an alarm:

  1. Swipe in any direction on the touch pad.

Obstacle Detection

The obstacle detection app on your phone allows you to customize how the sonar works on your Sunu band. As soon as you tap into the Obstacle Detection app, you will be to:

  • Adjust the sonar range and sensitivity for each sonar mode on your Sunu band
  • Turn ON/OFF the Edge Detector, an advanced echolocation feature.
  • Set the units of distance by selecting between Feet or Meters.

Adjust range and sensitivity

Tap the Sonar range & sensitivity to select the sonar mode which you want to adjust. You may choose between the short (indoor) range and long (outdoor) range sonar mode. Each mode has its corresponding range and sensitivity screen.

  • Range Slider: move the slider to increase or decrease the sonar range between 1 – 16 feet or 0.5 – 5  meters. The range value is display underneath the slider and is updated when the range slider is moved. The range value is displayed in the unit distance, i.e feet or meters.
  • Sensitivity Slider: Allows you to adjust the level of power provided to the sonar. Move the slider to increase or decrease the sensitivity between a level of 1 (low) to 10 (High). The sensitivity value is displayed underneath the slider.

Unit System

Select between the English or Metric units system that display the range values within the sonar modes. Use the selector switch to toggle between Feet or Meters.

**A shortcut to this app is available from within the dashboard.


Toggle the switch in the app to enable or disable gesture control of your Sunu band.

Gestures are simple movements of the hand that allow you to control certain functions of the Sunu band. Sunu band’s sensors track the position and movements of your hand to enable you to quickly SLEEP and WAKE-UP the Obstacle Detection App without pressing a button.


The haptics app enables you to manage and customize the vibration feedback that you receive from the Sunu band. You can adjust the level or intensity of the haptic vibration feedback felt on the wrist when the obstacle detection app is in use.

Adjust the slider between soft, medium and strong vibration intensity.

**A shortcut to this app is available from within the dashboard.