Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your MISIRUN Smart Watch Ultra GT88. Please read this manual carefully to ensure proper use and to maximize the functionality of your device.

Figure 1: MISIRUN Smart Watch Ultra GT88
The MISIRUN Smart Watch Ultra GT88 features a 1.52-inch round HD display, designed for both men and women. It includes advanced features such as call handling, AI voice assistant, music playback, and comprehensive fitness tracking.
What's in the Box
Upon opening the package, verify that all the following items are present:
- 1 x MISIRUN Smart Watch Ultra GT88
- 2 x Charging Cable (USB plug not included)
- 1 x User Manual (this document)
- 1 x Screen Protector
Setup Guide
1. Initial Charging
Before first use, fully charge your smartwatch. Connect one of the provided charging cables to the charging port on the back of the watch and the other end to a standard USB power adapter (not included). A full charge typically takes approximately 2 hours.
2. App Download and Installation
The MISIRUN Smart Watch Ultra GT88 requires the "Da Fit" application for full functionality and synchronization with your smartphone. You can download the "Da Fit" app from:
- Android: Google Play Store (Compatible with Android 5.0 or above)
- iOS: Apple App Store (Compatible with iOS 9.0 or above)
Search for "Da Fit" and install the application on your mobile device.
3. Device Pairing
- Ensure Bluetooth is enabled on your smartphone.
- Open the "Da Fit" app.
- Follow the on-screen instructions within the app to add a new device.
- The app will search for available devices. Select "GT88" or the corresponding device name when it appears.
- Confirm the pairing request on both your watch and smartphone if prompted.
- Once paired, the watch will synchronize time and data with your phone.
Operating Instructions
Basic Navigation
- Touchscreen: Swipe left/right, up/down to navigate menus and access features.
- Digital Crown: Rotate the crown to scroll through lists or zoom in/out. Press the crown to return to the home screen or confirm selections.
Call Functions
The Smart Watch Ultra GT88 features a built-in speaker and microphone, allowing you to make and receive calls directly from your wrist when connected to your mobile phone via Bluetooth.
- Making Calls: Access the phone interface on the watch to dial numbers or select contacts.
- Receiving Calls: When a call comes in, the watch will display the caller ID. You can answer or reject the call directly from the watch.

Figure 2: Making Calls with the Smart Watch
This image illustrates the convenience of handling phone calls directly from your wrist, displaying the watch's call interface and dial pad.
AI Voice Assistant
Utilize the integrated AI voice assistant for hands-free control. Long press the digital crown or activate the voice assistant feature on the watch to issue commands such as making calls, checking weather, or controlling music.

Figure 3: AI Voice Assistant in Use
The watch's AI voice assistant allows for convenient voice commands, enabling users to perform tasks like initiating calls or checking information without needing to manually navigate the watch.
Music Player
Control music playback on your connected smartphone directly from your watch. You can play, pause, skip tracks, and adjust volume.

Figure 4: Music Player Control
This image demonstrates the watch's capability to control music playback on a connected device, providing easy access to your audio experience.
Custom Watch Faces
Personalize your watch with a variety of watch faces available through the "Da Fit" app. You can choose from pre-designed faces or upload your favorite photo as a custom wallpaper.

Figure 5: Custom Watch Face Options
The watch offers extensive customization for its display, allowing users to select from over 150 watch faces or use their own images as backgrounds.
Message Notifications
Receive notifications from your smartphone applications directly on your watch, including messages, social media alerts, and more. Configure notification settings within the "Da Fit" app.

Figure 6: Message Notifications
This image shows how the smartwatch displays incoming messages and notifications from various applications, keeping you informed at a glance.
Fitness Tracking and Sports Modes
The watch tracks various fitness metrics including step count, distance, and calorie consumption. It supports over 120 sports modes to accurately monitor your activity during different exercises.
- Activity Tracking: Automatically records daily steps, distance, and calories burned.
- Sports Modes: Select a specific sport mode (e.g., cycling, running, tennis) before starting your workout for tailored data collection.

Figure 7: Multi-Sport Mode Tracking
The smartwatch offers a wide range of sports modes to accurately track and analyze your performance during various physical activities.
Health Monitoring
The watch is equipped with powerful motion sensors to monitor key health indicators.
- Heart Rate: Continuously monitors your heart rate throughout the day.
- Blood Pressure: Provides estimates of blood pressure readings.
- SpO2: Measures blood oxygen saturation levels.

Figure 8: Health Monitoring Features
The watch provides essential health metrics such as heart rate, blood pressure, and SpO2, helping users keep track of their well-being.
Sleep Tracking
The smartwatch automatically monitors your sleep patterns, recording sleep duration and quality. Review your sleep data in the "Da Fit" app to gain insights into your sleep habits.

Figure 9: Sleep Tracking
The watch accurately records sleep status and analyzes sleep quality, providing a comprehensive overview of your rest patterns.
Weather Information
When connected to your mobile phone, the watch will display real-time weather information for your current location.

Figure 10: Weather Information Display
The smartwatch provides real-time weather updates when connected to your smartphone, keeping you informed about current conditions.
Maintenance
Cleaning Your Smart Watch
To maintain the appearance and functionality of your watch, clean it regularly:
- Wipe the screen and strap with a soft, lint-free cloth.
- For stubborn dirt, dampen the cloth slightly with water. Avoid using harsh chemicals or abrasive materials.
- Ensure the charging contacts on the back of the watch are clean and dry before charging.
Water Resistance (IP67)
The MISIRUN Smart Watch Ultra GT88 is rated IP67 waterproof. This means it is protected from dust 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. However, it is not recommended for swimming, showering with hot water, or diving, as steam and high water pressure can damage the device.

Figure 11: IP67 Waterproof Rating
The watch's IP67 rating ensures protection against dust and temporary immersion in water, making it suitable for everyday wear.
Battery Care
- Avoid extreme temperatures, which can affect battery life.
- Charge the watch regularly, but avoid leaving it fully discharged for extended periods.
- Use only the provided charging cables.
Troubleshooting
If you encounter issues with your MISIRUN Smart Watch Ultra GT88, please refer to the following common solutions:
| Problem | Possible Solution |
|---|---|
| Watch does not turn on. | Ensure the watch is fully charged. Connect it to the charger for at least 30 minutes. |
| Cannot pair with smartphone. |
|
| Notifications are not received. |
|
| Inaccurate health data. | Ensure the watch is worn snugly on your wrist, about one finger's width above the wrist bone. Avoid excessive movement during measurements. Note that health data is for reference and not for medical diagnosis. |
| Short battery life. |
|
If the problem persists, please refer to the official "Instructions for Use (IFU) (PDF)" document available online or contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Name | watch ultra (GT88) |
| Brand | MISIRUN |
| Screen Size | 1.52 inches |
| Display Type | Round HD Display (360*360 resolution) |
| Operating System | Wear OS |
| Connectivity Technology | Bluetooth |
| Battery Type | Lithium Polymer (1 required, included) |
| Water Resistance | IP67 |
| Product Dimensions | 2.05 x 1.95 x 0.47 inches |
| Item Weight | 2.79 ounces (79 Grams) |
| Special Features | Sleep Monitor, Activity Tracker, Alarm Clock, Phone Call, Notifications, Music Player, AI Voice Assistant, 120+ Sports Modes |
| Compatibility | Android 5.0 or above, iOS 9.0 or above |
Warranty and Support
Return Policy
This product is subject to a 30-day return policy for refund or replacement, as per the retailer's terms and conditions.
Customer Support
For further assistance, technical support, or warranty inquiries, please contact the seller directly through the platform where you purchased the product. You may also refer to the official "Instructions for Use (IFU) (PDF)" document linked on the product page for additional details.
Manufacturer: shenzhenshizhisuixingdianzikejiyouxiangongsi