Marsyu MT300
Marsyu Smartwatch MT300 User Manual
Model: MT300
1. Introduction
This manual provides detailed instructions for the Marsyu Smartwatch MT300. Please read this manual carefully before using the device to ensure proper operation and to maximize its features. Keep this manual for future reference.
2. Safety Information
- Medical Disclaimer: The Marsyu Smartwatch MT300 is not a medical device. All health monitoring data (ECG, heart rate, blood pressure, blood oxygen, etc.) is for reference purposes only and should not be used for medical diagnosis or treatment. Consult a medical professional for any health concerns.
- Water Resistance: The device is IP67 water-resistant, suitable for daily activities like handwashing, rain, and sweat. It is not suitable for hot water, seawater, swimming, or showering. Avoid contact with corrosive liquids.
- Charging: Use only the provided charging cable. Do not charge the device in wet conditions.
- Operating Temperature: Avoid exposing the device to extreme temperatures (very hot or very cold).
- Disassembly: Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
3. Package Contents
Verify that all items are present in your package:
- Marsyu Smartwatch MT300
- Magnetic USB Charging Cable
- User Manual
4. Setup Guide
4.1. Charging the Smartwatch
Before first use, fully charge the smartwatch.
- Connect the magnetic end of the charging cable to the charging contacts on the back of the smartwatch.
- Connect the USB end of the cable to a standard USB power adapter (5V/1A) or a computer's USB port.
- The watch display will show the charging status. A full charge takes approximately 2.5 hours.

Image: Marsyu Smartwatch MT300 charging with magnetic cable. The image highlights the 440 mAh battery, magnetic USB charge, long battery life, faster charging, 3-7 days heavy use, 20 days standby time, and 2 hours charging duration.
4.2. App Installation
To access all features and synchronize data, download and install the 'H Band' application on your smartphone.
- Scan the QR code in the manual or on the watch display (if available) to download the 'H Band' app.
- Alternatively, search for 'H Band' in the Apple App Store (for iOS devices) or Google Play Store (for Android devices).
- Install the application and grant necessary permissions.
4.3. Device Pairing
Pair your smartwatch with the 'H Band' app via Bluetooth.
- Ensure Bluetooth is enabled on your smartphone.
- Open the 'H Band' app and create an account or log in.
- Follow the in-app instructions to add a new device. Select the Marsyu MT300 from the list of available devices.
- Confirm the pairing request on both your smartphone and the smartwatch.
5. Operating Instructions
5.1. Basic Navigation
- Touchscreen: Swipe left/right, up/down to navigate through menus and features. Tap to select.
- Side Button: Typically used to return to the previous screen or the watch face, or to power on/off the device (long press).
5.2. Display and Watch Faces
The smartwatch features a 1.43-inch AMOLED HD display with 466x466 resolution.
- Changing Watch Faces: Long-press the watch face on the screen, then swipe left/right to browse pre-installed faces. More than 200 cloud watch faces are available through the 'H Band' app.
- Custom Watch Faces: You can upload any photo via the 'H Band' app to personalize your watch face.

Image: Marsyu Smartwatch MT300 showcasing its 1.43-inch AMOLED HD display, Bluetooth 5.0 calling capabilities, message reminder function, and AI voice assistant feature.
5.3. Bluetooth Calling and Notifications
With built-in high-fidelity speakers and a microphone, the smartwatch supports Bluetooth calls and real-time notifications.
- Making/Receiving Calls: Once paired with the 'H Band' app, you can make and receive calls directly from your wrist. The app supports adding contacts and viewing call records.
- Message Notifications: The smartwatch provides real-time notifications for SMS, email, WhatsApp, Facebook, Instagram, and other apps. To reply to messages, use your mobile phone.
5.4. Health Monitoring (Reference Only)
The smartwatch offers comprehensive health monitoring features. Remember, this device is not for medical use.
- ECG + PPG: Collects cardiac bioelectrical signals. ECG data can be viewed within 60 seconds.
- Heart Rate: Automatic 24-hour monitoring.
- Blood Pressure: Automatic 24-hour monitoring.
- Blood Oxygen: Automatic 24-hour monitoring.
- Sleep Analysis: Monitors sleep patterns and provides analysis.
- Body Temperature: Monitors skin temperature.
- Stress Monitoring: Provides stress level insights.
- Menstrual Monitoring: Provides functions for female menstrual cycle tracking.
- Uric Acid/Blood Lipid Monitoring: Real-time detection and analysis reports for health status.
- Body Composition Measurement: Measures body fat percentage, muscle percentage, subcutaneous fat, protein, and BMI index.

Image: Marsyu Smartwatch MT300 demonstrating ECG and Heart Rate Alarm functions, including an ECG waveform display and HRV Lorentz Analysis for detecting heart abnormalities.

Image: Marsyu Smartwatch MT300 illustrating its capabilities for real-time Uric Acid and Blood Lipid Monitoring, alongside Body Composition Measurement, providing detailed health reports.

Image: Marsyu Smartwatch MT300 showing automatic monitoring of heart rate, blood oxygen, blood pressure, body temperature, stress, and sleep. Below, a user is exercising, indicating the watch's multiple sport modes.
5.5. Sports Modes
The smartwatch supports over 50 sports modes to track your physical activity.
- Available Modes: Includes walking, running, cycling, jump rope, yoga, badminton, and many more.
- Data Recording: The watch records exercise data, which can be viewed in the 'H Band' app.
- MET-test: Measures metabolic equivalent of task during exercise.
5.6. Other Features
- AI Voice Assistant: Provides convenient voice commands and intelligent interactive functions.
- Music Control: Control music playback on your smartphone.
- Weather Forecast: Get real-time weather updates.
- Alarm Clock: Set alarms directly from the watch or app.
- Sedentary Reminder: Reminds you to move after periods of inactivity.
- Breathing Training: Guided breathing exercises for relaxation.
- Find My Phone: Helps locate your paired smartphone.
- Calculator: Basic calculator function.

Image: Marsyu Smartwatch MT300 showcasing its diverse features: MET-test for activity, Sedentary Reminder, Alarm Clock, Weather Forecast, Music Control, Find My Phone, Breathing Training, and Calculator.
6. Maintenance
6.1. Water Resistance Guidelines
The Marsyu Smartwatch MT300 has an IP67 water resistance rating.
- It is resistant to sweat, rain, and handwashing.
- Do not use it for swimming, showering, or in hot water or seawater.
- Avoid contact with corrosive liquids.
6.2. Cleaning
- Wipe the watch and strap regularly with a soft, dry cloth.
- If necessary, use a slightly damp cloth with mild soap, then rinse and dry thoroughly.
- Do not use harsh chemicals or abrasive materials.
6.3. Battery Care
- Charge the device regularly, even if not in use, to maintain battery health.
- Avoid fully discharging the battery frequently.
- Store the device in a cool, dry place when not in use for extended periods.
7. Troubleshooting
If you encounter issues with your Marsyu Smartwatch MT300, refer to the following common solutions:
| Problem | Possible Solution |
|---|---|
| Watch does not turn on | Ensure the watch is fully charged. Connect to the charger for at least 30 minutes. |
| Cannot pair with smartphone | Ensure Bluetooth is enabled on your phone. Restart both the watch and phone. Make sure the 'H Band' app has location and Bluetooth permissions. Try unpairing and re-pairing. |
| Notifications not received | Check app notification settings in the 'H Band' app and your phone's system settings. Ensure the watch is connected via Bluetooth. |
| Inaccurate health data | Ensure the watch is worn snugly on your wrist. Clean the sensors on the back of the watch. Remember, data is for reference only and not for medical use. |
| Short battery life | Reduce screen brightness, turn off unnecessary notifications, limit continuous health monitoring. Ensure the watch is fully charged. |
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Marsyu |
| Model Number | MT300 |
| Display | 1.43-inch AMOLED HD (466x466 resolution) |
| Connectivity | Bluetooth 5.0 |
| Compatible Devices | Android 4.4+, iOS 8.0+ |
| Battery Capacity | 440 mAh Lithium-polymer |
| Charging Time | Approx. 2.5 hours |
| Battery Life (Normal Use) | 5-10 days |
| Standby Time | 15-30 days |
| Water Resistance | IP67 |
| GPS | No |
| Color | Black |
| Shape | Round |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or contact Marsyu customer service through their official website or the retailer where you purchased the product.
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