Letscom Fitness Tracker User Manual (ID131Color HR)


Getting Started

What’s in the box

Fitness tracker
(ID131Color HR with bands)

This tracker is designed with a built-in USB plug, no charging cable is required for charging, and no charging cable or wall charger is included in the package.

What’s in this Document

This manual gets you started quickly by setting up your tracker. Setup ensures that your tracker can synchronize itsdata with the VeryFitPro app, where you can get detailed information on your stats, view historical trends, log sleep, and more. As soon as setup is complete, you’re ready to startmoving. The remainder of the manual walks you through every function on your ID131Color HR.

Setting up Your Tracker

1. Charging your tracker

Please charge your tracker for at least 10 minutes to have it activated before initial use.

Insert the built-in USB plug of the tracker into the USB port for charging. Please ensure that the metal strips align with the USB strips.

When the tracker shows a low battery indication, connect the tracker to a USB charging adaptor or a port with 5V-500mA. If the tracker is installed correctly, the
tracker will vibrate.

If the tracker does not vibrate, remove the tracker, flip it  upside-down and reinsert it into the charging port. Remove the tracker from the power supply once fully  charged.  

USB charger requirement: DC USB port (5V-500mA) Charging time: 1-2hr(s)

2. Assembling/Dissembling Your Tracker

Push the bands in following the direction of the arrow.

Gently pull the bands off the tracker body following the direction of the arrow.

Wearing Your Tracker

All-day wear and exercise

For all-day wear when you’re not exercising, wear the device on your wrist horizontally, a finger’s width below your wrist bone and lay flat, the same way you would put on a watch.

For optimized heart rate tracking, keep these tips in mind:

  1. Experiment with wearing the tracker higher on your wrist during exercise. Because blood flow in your arm increases the farther up you go, moving the tracker up a couple of inches can improve the heart rate signal. Also, many exercises such as bike riding or weight lifting cause you to bend your wrist frequently, which is more likely to interfere with the heart rate signal if the tracker is lower on your wrist.
  1. Do not wear your tracker too tight; a tight band restricts blood flow, potentially affecting the heart rate signal. That being said, the tracker should also be slightly tighter (snug but not constricting) during exercise than during all-day wear.

Using Your Tracker

App Installation


  • The VeryFitPro app is only compatible with Smartphones, not tablets or PCs
  • Smartphones should have iOS 8.0 or above or Android 4.4 or above systems; Bluetooth version should be 4.0 or above

Smart Phone System Requirement

  • iOS 8.0 & above
  • Android 4.4 & above
  • Bluetooth 4.0 & above

App Interfaces

Main Page (Swipe down the page
to sync data from the
tracker to your phone)

Pairing the Tracker with Your Phone

Please pair the tracker with your phone in the VeryFitPro app, NOT in the Bluetooth settings of your phone.

1) Please ensure to enable the Bluetooth of your phone  before beginning the pairing process. 

2) Open VeryFitPro app on your smartphone and go to  “Device” page, tap “Bind Device”, then your  smartphone starts searching devices.  

3) Choose “ID131Color HR” in the list of found devices,  tap “ID131Color HR” to connect the tracker to your  smartphone. (If your phone failed to find ID131Color  HR, please tap the touch key to wake the tracker, and  search the tracker on your phone one more time.) 


1) Once the tracker is connected to your app, the tracker  will automatically search and reconnect itself if the  connection is lost or manually disconnected when  your Bluetooth connection is restarted. 

2) If the tracker is unbound from the app, the information  on the tracker will be reset, and the information on the  app will be cleared. Please do not unbind the  connection unless there is an issue that will require a  reset.  

3) The tracker can only pair with one Bluetooth device at  a time. During the pairing, please confirm there are no  other Bluetooth devices nearby.

Getting to Know Your Tracker

1. Touch Key 

After the tracker is connected to the app using the binding  process, the main screen will display the time and date as  shown in fig. 1

 2. Waking a Dimmed Screen 

To conserve power, the tracker has a  standby mode in which the screen turns  off. To wake the screen, please follow the following steps: 

  • Turn your wrist towards you, and the  screen will display time. 
  • Tap the touch key, and the tracker will display the main screen
Main Screen

3. Tracker Interfaces

Tap the touch key to look through different interfaces/go to different functions:

x1: “Walk Mode”, “Run Mode” and “Bike Mode” are displayed on the device screen by default. You can set up to 3 different sports modes from 14 sports modes to display on the device screen (Go to VeryFitPro app- device-more- activity display)

x2: “Alarm Mode” is displayed on the tracker screen only when alarm alert(s) is/are added and enabled in the app (device page- Alarm Alert)

Function Introduction

1. Tracking Daily Activity Data 

The tracker tracks your all-day activity data like steps,  distance, calories burned and active minutes. 

Hold the touch key for 2s to view detailed step data and tap  to flip through the data. 


You can go to the app to set your sports target (“User” page- target setting). When you reach your sports target, the tracker vibrates to remind you.

2. Monitoring Heart Rate 

The tracker tracks your real-time heart rate automatically  and continuously. You can also view your detailed heart rate  data in the app. 

After entering the heart rate interface for 1s, the tracker  starts monitoring the heart rate automatically. Before the  correct data is detected, the tracker shows ” “; after  the correct data is detected, it shows specific data.


To monitor heart rate more accurately, wear the tracker on the upper position of your wrist and a bit tighter than usual when you are taking exercise. Besides, complete your profile in the app.

Automatic heart rate monitoring is ON as default monitoring heart rate all day automatically. You can disable/enable automatic heart rate monitoring in the app (device page- Heart Rate detection)

3. Setting Alarms 

You can set alarms in the app and have the tracker vibrate to wake you up or remind yourself of important dates, meetings, and interviews, etc.   

1) Go to the “Device” page in the app and tap “Alarm Alert”.  

2) Tap “+” to add an alarm. 

3) Tap the alarm, and set the alarm type, repeat type and time.  

4) Click () to save your settings. You can hold the touch key of the  tracker for 2s to enable/disable the  alarm

4. Tracking Sports: Walk

The tracker can tracks your exercise data  during walking. 

1) Hold the touch key for 2s to start the  walk mode.

2) During exercise, tap the touch key to flip through exercise  data.

3) Hold the touch key for 2s to exit the walk mode. The following data is displayed after the exercise is ended;  tap the touch key to flip through exercise data: 

Data of exercises less than 1 minute will not be saved.

5. Tracking Sports: Run

The tracker tracks your exercise data during running.
1) Hold the touch key for 2s to start the run mode.

2) During exercise, tap the touch key to flip through exercise data.

3) Hold the touch key for 2s to exit the run mode.
The following data is displayed after the exercise is ended; tap the touch key to flip through exercise data:

6. Tracking Sports: Bike

The tracker tracks your exercise data during cycling.
1) Hold the touch key for 2s to start the bike mode.

2) During exercise, tap the touch key to flip through exercise data.

3) Hold the touch key for 2s to exit the bike mode.
The following data is displayed after the exercise is ended; tap the touch key to flip through exercise data:

  •  You can also use the GPS of your phone to track your pace & distance during walks, hikes, runs or rides while mapping out your run or walk on your phone.

After starting the running mode,  the app will track and map your  run distance (using the GPS of your phone). After the exercise, you can effortlessly check your exercise data in both the app and the tracker.

6.1 Abnormal Situations During Exercise
1) Inactive Exit Prompt

a) The tracker will automatically exit the sport mode if no action is taken in 15 minutes.
b) The tracker will be forced to exit the sport mode if you don’t tap on the waiting prompt within 15 seconds.
Tap the touch key to cancel the Automatic Exit Sport mode prompt, then the sport mode can work.

2) The prompt of being forced to exit the sport mode when memory is full.

Tap the touch key to confirm the prompt if the tracker is forced to exit the sport mode when memory is full, then exit the sport mode and exercise data is displayed.

The sport mode lasts for up to 6 hours.
When the memory is full, it will prompt that the sport mode is forced to exit.

3) The prompt being forced to exit sport mode when the battery is low

Tap the touch key to confirm the prompt if the tracker is forced to exit sport mode when the battery is low, then exit the sport mode and exercise data is displayed.

6.2 Abnormal Operation Situation During Exercise
When the app and the tracker are disconnected, the screen will appear a prompt of waiting:

Tap the touch key to exit the interface of waiting prompt.

7. Tracking Sleep

The tracker automatically tracks your sleep duration (Deep Sleep, Light Sleep, and Wake Sleep) and consistency with comprehensive analysis of sleep quality data so you can see your sleep trends and get a better routine.
You can check your detailed sleep data in the app.

8. More Functions

8.1 Call Notification
When there is an incoming call, the tracker vibrates to remind you and the screen displays the caller ID.

Hold the touch key for 2s to reject the call; tap the touch key to return to the main screen.


  • Only when “Call alert” is enabled in the app (“Device” page-Call Alert), calls will be notified (After enabling or disabling) the call alert function, click () to save your settings.
  • When “Do not disturb” is enabled in the app (“Device” page- More- do not disturb) calls will not be notified on the tracker during the set do-not-disturb period.

8.2 Message Notification
When messages (including SMS, Facebook, WhatsApp, Twitter, Instagram, Facebook Messenger, LinkedIn, Email, Mail, and Calendar) come in, the tracker vibrates to remind you and the screen displays the message content.

8.3 Sedentary Reminder
The tracker vibrates to remind you to move when you are sitting too much (device page-sedentary alert, enable the sedentary alert function and set the remind interval )

8.4 Remote Camera Control
If you want to position your phone for a photo and then take the photo from a distance, you can use the tracker to take the photo.
1) Make sure you have allowed the VeryFitPro app to access your phone camera and photos in your phone settings.
2) Go to the “Device” page in the app and tap “Camera”, then a camera icon appears on your tracker screen.

3) Tap the touch key of the tracker to have your smartphone shoot photos.
The photos are saved in the photo album of your phone.

8.5 Device Error Notification
When the tracker has an exception, an Error is displayed.
Status code:
-01 indicates acceleration sensor abnormality;
-02 indicates the heart rate sensor is abnormal;
-03 indicates touch IC is abnormal;
-04 indicates the flash is abnormal;

Basic Specifications

Model No.: ID131Color HR
Sync: Bluetooth 4.0
Battery Capacity: 90mAh
Working Voltage: 4.35V
Working Temperature: -20°Cto 40°C
Weight: 0.88oz (25g)
Waterproof Rating: IP68
Working Time: Up to 7 days

Electronic Information Products
Poisonous and Harmful Statement

This product meets the EU ROHS standards
Refer to IEC 62321 and EU RoHS Directive 2011/65 / EU and its revision instructions


Failed to find the tracker when pairing

  1. Make sure the Bluetooth of your smartphone is enabled, and your smartphone system meets the requirement of iOS 8.0 or later, Android 4.4 or later, Bluetooth 4.0 or later.
  2. Make sure the distance between your smartphone and the tracker is within 0.5 meters, also the Bluetooth communication is among the distance range (within 10 meters).
  3. Make sure your tracker has enough battery. If there is still a problem after it was fully charged, please contact us.

Failed to connect with Bluetooth occasionally

Reboot your smartphone or restart the phone Bluetooth.

Failed to charge the tracker

Make sure the direction of the tracker’s USB plug is correct when plugging into a USB port for charging (ensure the metal strips of the tracker’s USB plug align with the USB strips).
If it’s charged correctly, the tracker’s red indicator turns on and will be off when it has been fully charged.
As the built-in battery capacity is small, please remove the tracker from the power supply once fully charged. Prolonged charging may shorten the battery’s life.

Failed to receive SMS/calls notifications

Calls/SMS notification function works when the tracker connects to your smartphone via the app. Please kindly refer
to the following tips:

  1. Go to your smartphone Settings, find VeryFitPro app and enable the Location and all Notifications.
  2. Enable the Bluetooth of your phone and go to the VeryFitPro app to bind the tracker.
  3. Enable the Call or SNS alert function, and click () to save your settings.

Failed to count steps accurately

The fitness tracker has a built-in 3D sensor. It registers your steps when you swing your arm. Sometimes the data on tracker may display a little delayed. And it will reset itself if you walk less than 40 steps continuously. To test the accuracy of the pedometer, please walk casually and continuously up to 100 steps or more.

Failed to measure heart rate

Make sure the tracker sits neatly on your wrist before use.
Tap the touch key to go to the heart rate mode and wait for 10~20s to have your heart rate.

Failed to connect to the smartphone

The tracker will disconnect from your smartphone in the following cases:

  1. Smartphone Bluetooth was off or exceed the Bluetooth connection distance range (the Bluetooth connection distance is within 10 meters, and it can easily be reduced by walls or furniture, etc.)
  2. The VeryFitPro app was ended in the phone background process.

To reconnect the tracker to your smartphone, please kindly take the following steps:

  1. Go to your smartphone system Settings, find VeryFitPro app and enable the Location and all Notifications.
  2. Clear all running/background processes in your smartphone. Go to VeryFitPro app, and swipe down “Mainpage”, then the tracker will reconnect to your smartphone and update data. You can also restart your smartphone and Bluetooth, then rebind the tracker in the app.

I have disconnected the tracker from my iPhone, but other phone still can not search the device number of this tracker

  1. Enter “Settings” on your iPhone, Tap “Bluetooth”, choose “ID131Color HR” and tap ” ” “Forget This Device”.
  2. Then pair the tracker with other phone again following the steps in the previous part “Pairing the Tracker with Your Phone”.

Warranty and Safety Instructions


We strive to build our products with the highest attention to detail and craftsmanship. However, sometimes there are occurrences of a defect, so we are happy to offer a ONE-year hassle-free warranty on all our devices as we continue to make amazing products. Please contact us if you have any questions about our devices.

Important Safety Instructions

The device contains electrical equipment that may cause injury if not used properly. For example, prolonged contact may contribute to skin allergies for some users. To reduce irritation, please read the safety guidelines on the following pages to ensure proper use and care.

Do not expose your device to liquid, moisture, humidity, or rain while charging; do not charge your device when it is wet, as this may result in electrical shock and injury.

Battery Warnings

A lithium-ion battery is used in this device. If these guidelines are not followed, batteries may experience a shortened life span or may cause fire, chemical burn, electrolyte leakage, and/or injury.

Health Warnings


You can download  PDF version of the Letscom Fitness Tracker User Manual (ID131Color HR) here.