1. Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your aigo Smart Watch UM98. Please read this manual carefully to ensure proper use and to maximize the performance and lifespan of your device.
The aigo Smart Watch UM98 is designed for men, featuring heart rate monitoring, fitness tracking with over 100 exercise modes, blood oxygen monitoring, and a calorie counter. It is waterproof and compatible with both iOS and Android phones.
2. What's in the Box
Upon unboxing your aigo Smart Watch UM98, please verify that all the following components are included:
- Smartwatch
- Magnetic Charging Cable
- Faux Leather Strap
- Sports Band
3. Setup
3.1 Charging the Smart Watch
Before first use, fully charge your smartwatch. Connect the magnetic charging cable to the charging points on the back of the watch and to a USB power source. The watch features a 270mAh battery, providing approximately 7 days of use on a full charge.

Image: The aigo Smart Watch UM98 being charged using its magnetic charging cable. The image highlights the 270mAh battery and IP68 waterproof rating.
3.2 App Installation and Pairing
To unlock the full functionality of your smartwatch, download and install the companion app, "WearFIT Pro," on your smartphone. The app is compatible with iOS 11.0+ and Android 5.0+ devices.
- Scan the QR code provided in the quick start guide or search for "WearFIT Pro" in your phone's app store.
- Install the app and open it.
- Follow the on-screen instructions to create an account or log in.
- Enable Bluetooth on your smartphone.
- In the app, navigate to the device pairing section and select your aigo Smart Watch UM98 from the list of available devices.
- Confirm the pairing request on both your phone and the smartwatch.
Image: The aigo Smart Watch UM98 displaying various modes and pages, illustrating compatibility with iOS 11.0+ and Android 5.0+ devices.
3.3 Strap Installation
Your aigo Smart Watch UM98 comes with two interchangeable straps: a faux leather strap and a sports band. To change the strap:
- Locate the quick-release pins on the underside of the watch straps.
- Slide the pin inwards to detach the current strap.
- Align the new strap with the watch lugs and slide the pin back into place until it clicks, securing the strap.
Image: The aigo Smart Watch UM98 shown with both the faux leather and sports bands, highlighting the option to switch between them.
4. Operating the Smart Watch
4.1 Basic Navigation
The aigo Smart Watch UM98 features a 1.45-inch full touchscreen for intuitive navigation. Swipe left, right, up, or down to access different functions and menus. Press the side button to return to the home screen or access the app list.
4.2 Health Monitoring
The watch provides comprehensive health tracking features:
- Heart Rate Monitoring: The watch continuously monitors your heart rate throughout the day. Access the heart rate interface on the watch or in the app to view real-time data and historical trends.
- Blood Oxygen Monitoring: Measure your blood oxygen saturation (SpO2) levels. Ensure the watch is snug on your wrist for accurate readings.
- Sleep Tracking: Wear the watch to bed to monitor your sleep patterns, including light sleep, deep sleep, and duration. View detailed sleep analysis in the companion app.
Image: The aigo Smart Watch UM98 showing real-time health monitoring for blood oxygen (SpO2) and heart rate (BPM).
Image: The aigo Smart Watch UM98 in sleep mode, recording sleep patterns throughout the night, with details on light, deep, and duration of sleep.
4.3 Fitness Tracking
The watch supports over 100 exercise modes to track your physical activity. Select your desired sport from the exercise menu to record data such as steps, distance, calories burned, and exercise duration. The IP68 water resistance rating allows for use during various water-based activities, though it is not suitable for diving or high-pressure water activities.
Image: A person wearing the aigo Smart Watch UM98 during a workout, illustrating the watch's ability to track various sporting moments with 11 motion modes.
4.4 Notifications and Calls
Stay connected by receiving notifications directly on your wrist. The watch supports incoming call alerts, allowing you to make, take, or refuse calls. It also displays messages from various social media and communication apps when connected to your smartphone.
Image: The aigo Smart Watch UM98 showing various app icons and a notification, demonstrating its 'Stay Connected' feature for calls and messages.
Image: The aigo Smart Watch UM98 displaying an incoming call screen, illustrating its intelligent connection for phone calls.
4.5 Intelligent Voice Assistant (IVA)
Access your smartphone's voice assistant directly from your watch. A single long press on the designated button or screen area will activate the voice assistant, allowing for hands-free control and queries.
Image: The aigo Smart Watch UM98 displaying the Intelligent Voice Assistant (IVA) interface, along with weather and camera control screens.
4.6 Customization
Personalize your watch experience:
- Watch Faces: Choose from a variety of pre-installed watch faces or explore over 100 additional dials available through the "WearFIT Pro" app. You can customize the watch face by holding the center of the watch face.
- Straps: Easily switch between the included faux leather and sports bands to match your style or activity.
Image: The aigo Smart Watch UM98 showcasing a selection of customizable watch faces, emphasizing the 1.45-inch IPS touch screen and over 100 dials in the "WearFIT Pro" app.
5. Maintenance
5.1 Cleaning
Regularly clean your smartwatch and straps to prevent skin irritation and maintain optimal performance. Use a soft, damp cloth to wipe the watch face and body. For the straps, follow the cleaning instructions specific to the material (leather or silicone).
5.2 Water Resistance
The aigo Smart Watch UM98 has an IP68 water resistance rating, meaning it is protected against dust and can withstand immersion in water up to 1.5 meters for up to 30 minutes. It is suitable for daily use, such as hand washing, rain, and shallow swimming. However, it is not recommended for hot showers, saunas, diving, or exposure to high-pressure water jets, as this may compromise the seal.
6. Troubleshooting
If you encounter issues with your aigo Smart Watch UM98, refer to the following common solutions:
- Watch not charging: Ensure the magnetic charging cable is properly aligned with the charging points on the watch and connected to a working USB power source. Check for any debris obstructing the contacts.
- Watch not pairing with phone: Make sure Bluetooth is enabled on your phone and the watch is within range. Restart both the watch and your phone, then try pairing again through the "WearFIT Pro" app.
- Inaccurate health data: Ensure the watch is worn snugly on your wrist, but not too tight. Clean the sensor on the back of the watch. Avoid excessive movement during measurements.
- Notifications not appearing: Check your phone's app settings to ensure the "WearFIT Pro" app has permission to send notifications. Verify that notification alerts are enabled within the app and on the watch.
- Screen unresponsive: Try restarting the watch by pressing and holding the side button. If the issue persists, ensure the watch is charged.
- App issues (ads, limited customization): Some users have reported ads within the "WearFIT Pro" app and limitations on free watch face customization. These are app-specific behaviors and may require updates from the app developer or exploring available free options.
If these steps do not resolve your issue, please contact customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | UM98 |
| Brand | aigo |
| Screen Size | 1.45 Inches |
| Operating System | Wear OS |
| Connectivity Technology | Bluetooth |
| Special Features | Blood Pressure Monitor, Breath Monitor, Camera, Heart Rate Monitor, Phone Call |
| Water Resistance | IP68 |
| Battery Capacity | 270mAh (approx. 7 days use) |
| Material | Leather (strap) |
| Suggested Users | Men's |
| GPS | No GPS |
8. Warranty
The aigo Smart Watch UM98 comes with a 1-year manufacturer warranty. Please retain your proof of purchase for any warranty claims. For specific terms and conditions, refer to the warranty information provided with your product packaging or contact aigo customer support.
9. Support
For further assistance, technical support, or inquiries regarding your aigo Smart Watch UM98, please visit the official aigo website or contact their customer service department. Contact information can typically be found on the product packaging or the brand's official online presence.





