1. Introduction
1.1 Product Overview
The Trevi T-FIT 200 CALL Smartwatch is a versatile wearable device designed to monitor your physical activity and well-being, while also providing convenient communication features. It features a large 1.91-inch touchscreen display for easy interaction and clear visibility of information.
1.2 Key Features
- 1.91-inch Touchscreen Display
- Wireless Call Functionality (make and receive calls)
- Heart Rate Monitoring
- Blood Pressure Monitoring
- Blood Oxygen (SpO2) Monitoring
- Step Counter and Calorie Burn Tracking
- Distance Traveled Measurement
- Sleep Monitoring
- Notifications for Calls, SMS, and Social Media
- IP67 Water Resistance
- Magnetic USB Charging
- Dedicated DaFit Application Support

Figure 1.1: Front view of the Trevi T-FIT 200 CALL Smartwatch, displaying time, date, steps, heart rate, and calories burned.
2. Setup
2.1 Charging the Device
Before first use, fully charge your smartwatch. Connect the magnetic USB charging cable to the charging points on the back of the watch and plug the USB end into a standard USB power adapter (not included) or a computer USB port.
- Ensure the charging pins align correctly with the watch's charging contacts.
- A charging indicator will appear on the screen.
- Charging typically takes 2-3 hours for a full charge.

Figure 2.1: Rear view of the smartwatch, highlighting the magnetic charging contacts and sensors.
2.2 Pairing with Your Smartphone
To unlock the full functionality of your smartwatch, pair it with your smartphone using the DaFit application.
- Download the DaFit app from your smartphone's app store (Google Play Store for Android, Apple App Store for iOS).
- Ensure Bluetooth is enabled on your smartphone.
- Open the DaFit app and follow the on-screen instructions to create an account or log in.
- In the app, navigate to the 'Device' or 'Add Device' section.
- The app will scan for available devices. Select 'T-FIT 200 CALL' from the list.
- Confirm the pairing request on both your smartphone and the smartwatch if prompted.
- Once paired, the watch's time and date will synchronize with your phone, and you can configure settings and view data in the app.
3. Operating Instructions
3.1 Navigating the Touchscreen
The smartwatch features a responsive 1.91-inch touchscreen. Use the following gestures for navigation:
- Swipe Up/Down: Scroll through menus and notifications.
- Swipe Left/Right: Access different widgets or quick functions (e.g., heart rate, activity data).
- Tap: Select an item or confirm an action.
- Press Side Button: Return to the home screen or power on/off the device.

Figure 3.1: Side view of the smartwatch, illustrating the position of the physical button.
3.2 Making and Receiving Calls
With the wireless call function, you can manage phone calls directly from your wrist.
- Receiving Calls: When a call comes in, the watch will display the caller ID. Tap the green icon to answer or the red icon to reject.
- Making Calls: Access the dialer or contact list on the watch (after syncing with the DaFit app) to initiate a call. The call audio will be routed through the watch's speaker and microphone.
3.3 Fitness Tracking
The smartwatch continuously monitors various fitness metrics.
- Heart Rate: Swipe to the heart rate interface to view your current heart rate. The watch will automatically track your heart rate throughout the day.
- Blood Pressure & Blood Oxygen: Access these functions from the watch menu. Ensure the watch is worn snugly on your wrist for accurate readings.
- Steps, Calories, Distance: These metrics are tracked automatically as you move. View your daily progress on the watch face or in the DaFit app.
3.4 Sleep Monitoring
Wear the smartwatch to bed to monitor your sleep patterns. The watch will automatically detect your sleep duration and quality (deep sleep, light sleep, awake time). View detailed sleep analysis in the DaFit app.
3.5 Notifications
Receive notifications from your smartphone directly on your smartwatch.
- Ensure notification permissions are enabled for the DaFit app on your smartphone.
- Notifications for SMS, social media apps, and other alerts will appear on the watch screen.
- Swipe down from the top of the watch face to view your notification history.
3.6 Using the DaFit App
The DaFit app is essential for managing your smartwatch settings and reviewing your health and fitness data.
- Dashboard: View a summary of your daily activity, sleep, and health metrics.
- Device Settings: Customize watch faces, set alarms, enable sedentary reminders, and configure notification preferences.
- Health Data: Access historical data for heart rate, blood pressure, sleep, and activity trends.
- GPS Tracking: Use the app's GPS function during outdoor workouts to map your route (requires phone's GPS).

Figure 3.2: Another side view of the smartwatch, showing its sleek profile.
4. Maintenance
4.1 Cleaning Your Smartwatch
To maintain the appearance and functionality of your smartwatch:
- Wipe the screen and body with a soft, lint-free cloth.
- For stubborn marks, dampen the cloth slightly with water. Avoid using harsh chemicals or abrasive cleaners.
- Clean the charging contacts regularly to ensure proper charging.
4.2 Water Resistance (IP67)
The Trevi T-FIT 200 CALL Smartwatch has an IP67 water resistance rating, meaning it is protected against dust ingress and can withstand immersion in water up to 1 meter for up to 30 minutes.
- It is suitable for daily use, such as hand washing or light rain.
- Do not use it for swimming, showering with hot water, or diving.
- Avoid exposing the watch to high-velocity water or extreme temperatures.
- If the watch gets wet, dry it thoroughly before charging.
4.3 Battery Care
To prolong battery life:
- Avoid fully discharging the battery frequently.
- Charge the watch regularly, even if not in daily use.
- Store the watch in a cool, dry place when not in use for extended periods.
5. Troubleshooting
5.1 Common Issues and Solutions
- Watch not turning on: Ensure the watch is fully charged. Connect it to the charger and wait a few minutes before attempting to power it on again.
- Watch not pairing with phone:
- Ensure Bluetooth is enabled on your phone and the watch is within range.
- Restart both the watch and your phone.
- Clear Bluetooth cache on your phone (Android) or forget the device and re-pair.
- Ensure the DaFit app has necessary permissions.
- Inaccurate health data:
- Ensure the watch is worn snugly on your wrist, not too loose or too tight.
- Clean the sensors on the back of the watch.
- Avoid excessive movement during readings.
- Notifications not appearing:
- Check notification settings in the DaFit app.
- Ensure your phone's notification settings allow the DaFit app to display alerts.
- Verify that the watch is connected via Bluetooth.
- Screen unresponsive: Try restarting the watch by pressing and holding the side button. If unresponsive, allow the battery to fully drain and then recharge.
6. Specifications
| Feature | Specification |
|---|---|
| Model Name | T-FIT 200 |
| Brand | Trevi |
| Screen Size | 1.91 Inches |
| Shape | Rectangular |
| Operating System | OS |
| Connectivity Technology | Bluetooth |
| Wireless Communication Standard | Bluetooth |
| Battery Composition | Lithium-ion |
| GPS | No GPS |
| Special Feature | Time Display, GPS (Note: Product specifications indicate 'No GPS' for the device itself, but the DaFit app may utilize phone's GPS), Monitoring |

Figure 6.1: Detailed view of the smartwatch's rear, showing the optical sensors for health monitoring.
7. Warranty and Support
Specific warranty information for the Trevi T-FIT 200 CALL Smartwatch is not provided in this manual. For details regarding warranty coverage, duration, and how to obtain support, please refer to the documentation included with your product packaging or visit the official Trevi website.
For technical assistance or further inquiries, please contact Trevi customer support through their official channels.







