1. Introduction
Welcome to the user manual for your Celly Trainerwatch2 Activity Tracker System. This manual provides essential information on how to set up, operate, maintain, and troubleshoot your device. Please read this manual thoroughly before using your Trainerwatch2 to ensure optimal performance and longevity.
2. Setup
2.1 Unboxing and Initial Inspection
Carefully open the packaging and ensure all components are present and undamaged. The package should contain the Trainerwatch2 device and its charging cable.

This image shows the sleek black retail packaging for the Celly Trainerwatch2 smartwatch, highlighting the device and its brand logo.

The side of the Celly Trainerwatch2 packaging is displayed, listing key features such as heart rate monitoring and blood pressure and oxygen saturation tracking, along with multilingual text.
2.2 Charging the Device
Before first use, fully charge your Trainerwatch2. Connect the charging cable to the watch's charging port and plug the other end into a USB power adapter (not included) or a computer's USB port. The battery indicator on the screen will show charging progress.
2.3 Powering On/Off
- To Power On: Press and hold the side button until the Celly logo appears.
- To Power Off: Press and hold the side button, then select 'Power Off' on the screen.
2.4 App Installation and Pairing
To unlock the full potential of your Trainerwatch2, download the companion app on your Android smartphone. Search for the official Celly Trainerwatch2 app in the Google Play Store. Once installed:
- Enable Bluetooth on your smartphone.
- Open the Trainerwatch2 app and follow the on-screen instructions to create an account or log in.
- Select 'Add Device' or 'Pair Device' within the app.
- The app will search for your Trainerwatch2. Select your device from the list to initiate pairing.
- Confirm the pairing request on both your watch and smartphone if prompted.
3. Operating the Trainerwatch2
3.1 Navigating the Interface
The Trainerwatch2 features a responsive touchscreen and a side button for navigation.
- Swipe Up/Down: Scroll through menus and notifications.
- Swipe Left/Right: Access quick functions or different data screens.
- Tap: Select an item or open an application.
- Side Button: Press to return to the home screen or wake the device.

This image displays the main interface of the Trainerwatch2, featuring a grid of colorful icons representing various applications such as weather, settings, messaging, camera, music, games, and fitness tracking.
3.2 Activity Tracking
Your Trainerwatch2 automatically tracks your daily activities, including steps taken, distance covered, and calories burned. View your progress directly on the watch or in the companion app for detailed insights.

This image illustrates the Trainerwatch2's ability to display activity data, including a graph showing trends over time, and numerical values for minimum and maximum readings, likely related to heart rate or activity intensity.
3.3 Heart Rate Monitoring
The Trainerwatch2 can monitor your heart rate continuously or on demand. To take an on-demand reading, navigate to the heart rate application on your watch. Ensure the watch is snug on your wrist for accurate readings.
3.4 Blood Pressure and Oxygen Saturation
Utilize the dedicated applications on your Trainerwatch2 to measure your blood pressure and blood oxygen saturation (SpO2) levels. Follow the on-screen instructions for best results. These measurements are for reference only and should not be used for medical diagnosis.
3.5 Call Management
When connected to your smartphone, the Trainerwatch2 allows you to manage incoming calls directly from your wrist. You can see caller ID, accept, or reject calls.

The Trainerwatch2 screen is shown displaying an incoming call interface, with options to mute, access the keypad, adjust volume, and accept or reject the call.
3.6 Sport Modes
The Trainerwatch2 offers various sport modes to accurately track specific exercises. Select the appropriate mode before starting your workout for tailored data collection.
- Walking
- Running
- Cycling
- Skipping
- Badminton

The Trainerwatch2 screen is depicted showing a selection menu for various sport modes, including Walking, Running, Cycling, Skipping, and Badminton, allowing users to track specific activities.
3.7 Other Features
Explore other functionalities available on your Trainerwatch2, such as weather forecasts, music control, camera remote, games, and various utility settings accessible through the main application interface.
4. Maintenance and Care
- Cleaning: Regularly clean your Trainerwatch2 and its strap with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials.
- Battery Care: To prolong battery life, avoid fully discharging the device frequently. Charge it before the battery level drops too low.
- Storage: When not in use for extended periods, store the Trainerwatch2 in a cool, dry place away from direct sunlight.
- Water Resistance: Refer to the specifications for the device's water resistance rating. Avoid exposing the device to hot water or steam.
5. Troubleshooting
5.1 Device Not Turning On
- Ensure the device is fully charged. Connect it to the charger for at least 30 minutes.
- Press and hold the side button for 10-15 seconds to force a restart.
5.2 Unable to Pair with Smartphone
- Ensure Bluetooth is enabled on your smartphone and the Trainerwatch2 app is open.
- Make sure the Trainerwatch2 is within Bluetooth range (typically 10 meters).
- Restart both your smartphone and the Trainerwatch2.
- Forget the device in your phone's Bluetooth settings and try pairing again.
5.3 Inaccurate Readings (Heart Rate, Steps)
- Ensure the watch is worn snugly on your wrist, about one finger's width above your wrist bone.
- Clean the sensor on the back of the watch.
- Ensure your personal information (height, weight) is accurately entered in the companion app.
5.4 Short Battery Life
- Reduce screen brightness.
- Disable unnecessary notifications.
- Limit continuous heart rate monitoring if not needed.
- Ensure the app is updated to the latest version.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Celly |
| Model Name | 8021735202998 |
| Part Number | S7797240 |
| Screen Size | 1.81 Inches |
| Operating System | Android |
| Special Feature | Activity Tracker |
| Connectivity Technology | USB, Bluetooth |
| Battery Capacity | 1000 mAh (inferred from 1000) |
| Battery Cell Composition | Lithium Ion |
| GPS | Built-in GPS |
| Item Weight | 0.19 Kilograms |
| Item Dimensions (LxWxH) | 4.8 x 3.76 x 3.16 inches |
| Color | multi-coloured |
7. Warranty and Support
Your Celly Trainerwatch2 Activity Tracker System comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the warranty card included in your product packaging or visit the official Celly website. For technical support, troubleshooting assistance, or service inquiries, please contact Celly customer support through their official channels.





