1. Introduction
The SENBONO AIR3 is a sophisticated smartwatch designed to enhance your daily life with advanced health monitoring, communication features, and fitness tracking. Featuring a vibrant AMOLED display, Bluetooth calling, NFC, and compatibility with both iOS and Android devices, this manual will guide you through its functions and ensure optimal use.
2. Product Overview
Key Features:
- Display: 2.01-inch AMOLED Ultra HD full screen with 240x296 resolution. Features an all-weather steady-on display for continuous time visibility with lower energy consumption.
- Connectivity: Bluetooth 5.3 for stable connections and NFC for convenient payments or access.
- Communication: Bluetooth Call, Wireless Answer Calling, Message Reminder, Call Reminder, Answer Call, Dial Call, Push Message.
- Health Monitoring: 24-hour tracking including Heart Rate Monitor, Blood Oxygen Monitor, Sleep Monitor, and Blood Pressure Monitor.
- Activity Tracking: Steps Tracker, Distance Tracker, Calorie Tracker, Activity Tracker, and multiple movement modes.
- Other Functions: Voice assistant built-in, Remote Control, 24-hour instruction, Chronograph, Alarm Clock, World Time, Power Reserve, Week, Month, Interactive Music, Calendar, Lighting, Countdown, Calculators, Oxymeter.
- Battery: 220-300mAh capacity, offering approximately 2 days of battery life.
- Waterproof Grade: Life Waterproof.
- Compatibility: All Compatible (IOS and Android).
- Companion App: CO-FIT.
- Materials: Alloy case, Silica Gel band.

3. Setup Instructions
3.1 Initial Charging
Before first use, fully charge your SENBONO AIR3 Smart Watch. Connect the magnetic charging cable to the charging contacts on the back of the watch and plug the USB end into a power adapter (not included) or a computer USB port. The watch display will indicate charging status.
3.2 Power On/Off
- Power On: Press and hold the side button until the SENBONO logo appears.
- Power Off: Press and hold the side button, then select 'Power Off' on the screen.
3.3 App Installation and Pairing
- Download the CO-FIT App: Search for "CO-FIT" in your smartphone's app store (Google Play Store for Android or Apple App Store for iOS) and install it.
- Register/Log In: Open the CO-FIT app and follow the on-screen instructions to create an account or log in.
- Add Device: In the CO-FIT app, navigate to the device section (usually indicated by a watch icon or "Add Device").
- Scan for Device: Ensure your watch's Bluetooth is enabled (it usually is by default upon power-on). The app will scan for nearby devices. Select "SENBONO AIR3" from the list.
- Confirm Pairing: A pairing request will appear on both your phone and the watch. Confirm the pairing on both devices.
- Synchronization: Once paired, the watch will synchronize data with the app. Ensure the app has necessary permissions (e.g., location, notifications) for full functionality.
4. Operating Instructions
4.1 Basic Navigation
The SENBONO AIR3 features a full touch screen for intuitive navigation:
- Swipe Up/Down: Scroll through menus or notifications.
- Swipe Left/Right: Access quick functions or different widgets.
- Tap: Select an item or confirm an action.
- Press Side Button: Return to the home screen or access the app list.
4.2 Calling Functionality
The watch supports Bluetooth calling, allowing you to make and receive calls directly from your wrist.

- Answering Calls: When a call comes in, the watch will display the caller ID. Tap the green icon to answer.
- Making Calls: Access the dial pad or contacts list on the watch to initiate a call.
- Speakerphone: The watch uses a high-fidelity waterproof speaker and microphone for clear communication.
4.3 Notifications
Once paired with your smartphone, the watch can receive notifications for messages, social media alerts, and other app notifications. Ensure notification permissions are granted in the CO-FIT app and your phone settings.
4.4 NFC Functionality
The watch includes NFC capabilities. Refer to the CO-FIT app for setup instructions regarding NFC payments or other NFC-enabled features, if supported in your region.
5. Health Monitoring
The SENBONO AIR3 provides comprehensive health tracking features. Please note: This device is not a medical device. Data obtained from this app is for reference only and should not be used for clinical diagnosis, medical research, diagnostic, or treatment purposes.

- Heart Rate Monitor: Continuously tracks your heart rate throughout the day. View real-time data on the watch or detailed trends in the CO-FIT app.
- Blood Oxygen Monitor: Measures your blood oxygen saturation levels.
- Sleep Monitor: Tracks your sleep patterns, including deep sleep, light sleep, and wake times, to help you understand and improve your sleep quality.
- Blood Pressure Monitor: Provides blood pressure readings.
For accurate readings, ensure the watch is worn snugly on your wrist, about one finger's width from your wrist bone.
6. Sport Modes and Activity Tracking
The watch supports multiple movement modes to track various physical activities. It automatically records steps, distance, and calories burned.

To start a specific sport mode:
- Swipe on the watch face to find the 'Sport' or 'Workout' menu.
- Select your desired activity (e.g., running, cycling, walking).
- The watch will begin tracking your activity, displaying relevant metrics like duration, heart rate, and calories.
- To end the activity, swipe or press the side button and select 'End' or 'Pause'.
7. Customization
7.1 Watch Faces
The SENBONO AIR3 offers multiple customizable watch faces to match your style and mood.

To change the watch face:
- On the Watch: Long-press the current watch face, then swipe left or right to browse available options. Tap to select.
- Via CO-FIT App: Open the CO-FIT app, navigate to the watch face store or customization section. You can download and apply new watch faces from there.
7.2 Always-On Display
The AMOLED display supports an all-weather steady-on function, allowing the time to be displayed continuously in standby state with low power consumption. This feature can be configured in the watch settings or the CO-FIT app.

8. Maintenance
- Cleaning: Regularly clean your watch and strap with a soft, dry cloth. If necessary, use a slightly damp cloth and mild soap, then rinse and dry thoroughly.
- Avoid Chemicals: Do not expose the watch to strong chemicals, detergents, or solvents, as these can damage the materials.
- Water Resistance: The watch is 'Life Waterproof'. This means it can withstand splashes, rain, and brief immersion in shallow water. It is not suitable for swimming, diving, hot showers, or saunas. Avoid pressing buttons underwater.
- Charging: Use only the provided charging cable. Ensure the charging contacts are clean and dry before charging to prevent corrosion.
- Storage: Store the watch in a cool, dry place when not in use. Avoid extreme temperatures.
9. Troubleshooting
Common Issues and Solutions:
- Watch not turning on: Ensure the watch is fully charged. Connect it to the charger for at least 30 minutes.
- Cannot pair with phone:
- Ensure Bluetooth is enabled on both the watch and your smartphone.
- Make sure the watch is within range of your phone.
- Restart both the watch and your phone.
- Try unpairing and re-pairing the device through the CO-FIT app.
- Check if the CO-FIT app has all necessary permissions on your phone.
- Inaccurate health data: Ensure the watch is worn snugly on your wrist, not too tight or too loose. Keep the sensor clean. Remember, this is not a medical device.
- Notifications not appearing:
- Check if the watch is properly paired with your phone.
- Verify that notification permissions are enabled for the CO-FIT app in your phone's settings.
- Ensure specific app notifications are enabled within the CO-FIT app.
- Short battery life:
- Reduce screen brightness.
- Limit the use of power-intensive features like continuous heart rate monitoring or frequent calls.
- Disable unnecessary notifications.
- Ensure the watch is fully charged each time.
- Touch screen unresponsive: Restart the watch. If the issue persists, ensure the screen is clean and dry.
10. Specifications

| Attribute | Value |
|---|---|
| Brand Name | SENBONO |
| Model | AIR3 |
| Display Size | 2.01 inch |
| Screen Material | AMOLED |
| Resolution | 240*296 |
| Bluetooth Version | 5.3 |
| Battery Capacity | 220-300mAh |
| Battery Life | Approx. 2 days |
| Waterproof Grade | Life Waterproof |
| Case Material | Alloy |
| Band Material | Silica Gel |
| Band Width | 22mm |
| Application Age Group | Adult |
| Compatibility | All Compatible (Android, iOS) |
| App Name | CO-FIT |
| Functions | Passometer, fitness tracker, sleep tracker, message reminder, call reminder, answer call, dial call, remote control, push message, 24 hour instruction, chronograph, alarm clock, world time, power reserve, week, month, heart rate tracker, interactive music, calendar, lighting, countdown, calculators, oxymeter |
| Metrics Measured | Heart Rate Monitor, Blood Oxygen Monitor, Sleep Monitor, Blood Pressure Monitor |
| Voice Assistant Built-in | Yes |
| GPS | No |
| SIM Card Available | No |
| Multiple Dials | Yes |
11. User Tips
- Regular Syncing: Ensure you regularly sync your watch with the CO-FIT app to keep your health and activity data up-to-date and backed up.
- Battery Optimization: If you need to extend battery life beyond the typical 2 days, consider reducing screen brightness, turning off continuous heart rate monitoring, or disabling notifications for less critical apps.
- Comfortable Fit: For the most accurate health readings, wear the watch snugly but comfortably on your wrist.
- Explore Watch Faces: Customize your watch's appearance by exploring the wide range of watch faces available through the CO-FIT app.
12. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the SENBONO official store directly. Keep your proof of purchase for any warranty claims.





