1. Introduction
The aigo UM98 Smart Watch is designed to enhance your daily life with comprehensive health and fitness tracking capabilities. This device features a 1.45-inch full touchscreen, heart rate monitoring, blood oxygen monitoring, sleep tracking, and over 100 exercise modes. It is built with durable stainless steel and boasts an IP68 waterproof rating, making it suitable for various environments. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal use of your smart watch.
2. Package Contents
Please verify that all items are present in your package:
- aigo UM98 Smart Watch
- Charging Cable
- User Manual
- Additional Strap (if included in your specific model)
3. Setup
3.1 Charging the Smart Watch
Before first use, fully charge your aigo UM98 Smart Watch. Connect the magnetic charging cable to the charging points on the back of the watch and plug the USB end into a power adapter (not included) or a computer's USB port.

Image: The aigo UM98 Smart Watch connected to its magnetic charging cable, illustrating the charging process. The image also highlights the 270mAh battery capacity and IP68 waterproof rating.
3.2 App Installation and Pairing
To unlock the full potential of your aigo UM98 Smart Watch, download and install the Wearfit Pro app on your smartphone. The app is compatible with iOS 11.0+ and Android 5.0+ devices.
- Scan the QR code in the watch's manual or search for "Wearfit Pro" in your phone's app store.
- Install the app and create an account or log in.
- Ensure Bluetooth is enabled on your smartphone.
- Open the Wearfit Pro app, navigate to the 'Device' section, and select 'Add Device'.
- Select your aigo UM98 Smart Watch from the list of available devices to pair. Follow the on-screen prompts to complete the pairing process.

Image: The aigo UM98 Smart Watch wirelessly connected to a smartphone, displaying the Wearfit Pro app interface with various health and activity data.
3.3 Changing Time Format (12/24 Hour)
You can change the time display format (12-hour or 24-hour) through the companion app. Refer to the video below for a visual guide:
Video: Instructions on how to change the clock display from 24-hour to 12-hour format using the Gloryfit (Wearfit Pro) app.
4. Operating the Smart Watch
4.1 Basic Navigation
- Touchscreen: Swipe left, right, up, or down to navigate through menus and features. Tap to select.
- Side Button: Press to return to the home screen or wake the watch. Long press for specific functions like activating the voice assistant.
4.2 Customizing Watch Faces
Personalize your watch by choosing from a variety of watch faces available through the Wearfit Pro app. You can also select from different strap materials to match your style.

Image: A collection of diverse watch faces shown on the aigo UM98 Smart Watch, demonstrating the extensive customization options available through the app.
4.3 Intelligent Voice Assistant (IVA)
Activate your smartphone's voice assistant directly from your watch with a simple long press of the side button. This allows for quick commands and queries.

Image: The aigo UM98 Smart Watch screen showing the Intelligent Voice Assistant (IVA) interface, ready to receive commands.
5. Health Monitoring
The aigo UM98 Smart Watch provides comprehensive health tracking features to help you monitor your well-being.
5.1 Heart Rate Monitoring
The watch continuously monitors your heart rate throughout the day. View real-time data on the watch or detailed historical trends in the Wearfit Pro app.
5.2 Blood Oxygen Monitoring
Measure your blood oxygen saturation (SpO2) levels directly from your wrist. This feature provides insights into your respiratory health.
5.3 Sleep Tracking
The watch automatically tracks your sleep patterns, including light sleep, deep sleep, and wake times. Analyze your sleep quality and duration in the app to improve your rest.

Image: The aigo UM98 Smart Watch screen showing real-time blood oxygen percentage and heart rate in beats per minute, along with historical data graphs.

Image: The aigo UM98 Smart Watch on a person's wrist, displaying sleep mode data including duration and quality, with a person sleeping in the background.
6. Fitness Tracking
The aigo UM98 Smart Watch supports over 100 exercise modes to accurately track your workouts and activity levels.
6.1 Exercise Modes
Select your desired sport from the watch's menu to track specific metrics such as duration, calories burned, and heart rate during activities like running, cycling, swimming, and more.

Image: The aigo UM98 Smart Watch on a person's wrist, displaying a selection of sports modes during a workout session.
6.2 Activity Tracking
Beyond specific workouts, the watch continuously tracks your daily steps, distance traveled, and calories burned, providing a comprehensive overview of your activity.
7. Connectivity
Stay connected with your smartphone through your aigo UM98 Smart Watch.
7.1 Call Functionality
When paired with your phone, you can make, take, and refuse phone calls directly from your watch, offering convenience when your phone is not readily accessible.

Image: The aigo UM98 Smart Watch screen showing an incoming call interface, mirroring the connected smartphone's call function.
7.2 Notifications
Receive notifications for calls, messages, and social media apps directly on your watch, ensuring you don't miss important updates.

Image: The aigo UM98 Smart Watch displaying various notification icons for calls, messages, and popular social media applications.
7.3 Music Control
Control music playback on your smartphone directly from your watch, allowing you to play, pause, skip tracks, and adjust volume.
8. Battery and Water Resistance
8.1 Extended Battery Life
The aigo UM98 Smart Watch is equipped with a 270mAh battery, providing up to 7 days of typical use on a single charge, depending on usage patterns.
8.2 IP68 Water Resistance
With an IP68 waterproof rating, the watch is resistant to dust and can withstand immersion in water up to 1.5 meters for 30 minutes. It is suitable for daily use, including hand washing and light rain, but not recommended for hot showers, saunas, or deep-sea diving.
9. Maintenance
Proper care ensures the longevity and performance of your smart watch.
- Cleaning: Regularly clean the watch screen and strap with a soft, dry cloth. For stubborn dirt, use a slightly damp cloth and mild soap, then dry thoroughly.
- Charging Contacts: Keep the charging contacts on the back of the watch clean and free of debris to ensure efficient charging.
- Storage: Store the watch in a cool, dry place when not in use. Avoid extreme temperatures.
- Avoid Chemicals: Do not expose the watch to strong chemicals, detergents, or solvents, as these can damage the materials.
10. Troubleshooting
If you encounter issues with your aigo UM98 Smart Watch, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch does not turn on | Low battery; device malfunction | Charge the watch for at least 30 minutes. If it still doesn't turn on, contact support. |
| Unable to pair with phone | Bluetooth off; app not open; watch not discoverable | Ensure Bluetooth is on. Restart both watch and phone. Open the Wearfit Pro app and try pairing again. |
| Inaccurate health data | Improper fit; sensor obstruction | Ensure the watch is worn snugly on your wrist, one finger-width above the wrist bone. Clean the sensor on the back of the watch. |
| Notifications not received | App permissions; notification settings | Check app permissions on your phone for Wearfit Pro. Ensure notification access is granted. Verify notification settings within the Wearfit Pro app. |
| Watch not charging | Loose connection; dirty contacts; faulty cable | Ensure the magnetic charger is securely attached. Clean the charging contacts. Try a different USB power source. |
11. Specifications
- Model Name: UM98
- Brand: aigo
- Screen Size: 1.45 Inches
- Connectivity Technology: Bluetooth
- Wireless Communication Standard: Bluetooth
- Special Features: Heart Rate Monitor, Blood Oxygen Monitor, Sleep Monitor, Fitness Tracking, Call Functionality, Voice Assistant
- Water Resistance: IP68
- Battery Capacity: 270mAh (approx. 7 days typical use)
- Material: Stainless Steel (watch case), Leather (strap - specific model)
- Item Weight: 0.22 Kilograms
- Compatibility: iOS 11.0+ / Android 5.0+
12. Warranty and Support
12.1 Warranty Information
The aigo UM98 Smart Watch comes with a 1-year limited warranty from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear. Please retain your proof of purchase for warranty claims.
12.2 Customer Support
For technical assistance, warranty claims, or any questions regarding your aigo UM98 Smart Watch, please contact our customer support team. Refer to the contact information provided with your product packaging or visit the official aigo website for support details.





