1. Introduction
The Mibro Lite3 Pro is an advanced smartwatch designed to keep you connected, active, and informed. Featuring a vibrant AMOLED UHD screen, built-in GPS, Bluetooth calling, and comprehensive health monitoring, it's your perfect companion for both daily life and sports activities. This manual provides essential information to help you get started and make the most of your device.

Figure 1: Mibro Lite3 Pro Smartwatch with key features.
2. What's in the Box
Please check the package contents upon unboxing:
- 1 x Mibro Watch Lite3 Pro (with leather watch strap)
- 1 x Silicone strap
- 1 x User Manual
- 1 x Magnetic charger

Figure 2: Contents of the Mibro Lite3 Pro package.
3. Setup Guide
3.1 Charging the Smartwatch
Before first use, fully charge your Mibro Lite3 Pro. Connect the magnetic charger to the charging points on the back of the watch and plug the USB end into a power source (e.g., computer USB port, USB wall adapter). The watch display will indicate charging status.
3.2 App Installation and Pairing
- Download the Mibro Fit App from your device's app store (compatible with iOS and Android).
- Open the Mibro Fit App and follow the on-screen instructions to create an account or log in.
- Ensure Bluetooth is enabled on your smartphone.
- In the Mibro Fit App, search for your Mibro Lite3 Pro and initiate the pairing process. The watch uses a 2-in-1 Bluetooth chip for one-click direct connection.
- Confirm the pairing request on both your smartphone and smartwatch.
3.3 Strap Installation/Replacement
The Mibro Lite3 Pro comes with both a leather and a silicone strap. To change the strap, locate the quick-release pins on the underside of the strap where it connects to the watch body. Slide the pin to detach the strap, then align the new strap and slide the pin back into place to secure it.
4. Operating Instructions
4.1 Basic Navigation
The Mibro Lite3 Pro features a 1.32-inch AMOLED UHD Touch Screen. Swipe left, right, up, or down to navigate through menus, notifications, and widgets. Use the physical buttons for quick access to specific functions or to return to the home screen.
4.2 Bluetooth Calling
Once paired with your smartphone, you can make and receive calls directly from your wrist. The watch supports gesture control to answer incoming calls.

Figure 3: Bluetooth Calling functionality.
4.3 Global Satellite Positioning System (GPS)
The built-in GNSS chip supports GPS, Beidou, GLONASS, Galileo, and QZSS for accurate outdoor activity tracking. This allows for fast star search and precise positioning, with signal gain increased by 200% and positioning accuracy improved by 20%.

Figure 4: Global Satellite Positioning System in action.
4.4 Sports Modes and Activity Tracking
The Mibro Lite3 Pro offers over 150 sports modes and 18 professional sports algorithms. It features a 10-axis motion sensor for omnidirectional motion sensing, accurately identifying data like counting, frequency, amplitude, orientation, and lifting height during motion. The SeekBeats™ Motion Algorithm provides professional data analysis for various metrics including VO2 Max, recovery time, and training effectiveness.

Figure 5: App motion trajectory visualization and sports modes.
Running on the Track
Track key running metrics such as cadence (steps per minute), stride length (distance per step), exercise load, and exercise effect to improve athletic performance.

Figure 6: Running data tracking.
4.5 Health Monitoring
The smartwatch incorporates a Circular Matrix Biological Detection System with a multi-sensor layout and Fresnel pattern optical design for efficient and accurate health data. This system improves biological data collection and dark skin accuracy by 30%, and heart rate detection efficiency and power consumption savings by 10%.
- Heart Rate Monitor: Continuous heart rate tracking.
- Blood Oxygen Monitor: Alerts for low blood oxygen levels.
- Sleep Monitor: Tracks night sleep and sporadic naps, including REM stages, to score sleep quality.
- Stress Monitor: All-day stress monitoring and reminders for better state adjustment.
- Breathing Training: Guided breathing exercises to relieve stress.
- Women's Health: Records physiological cycles and predicts menstrual and ovulation periods.

Figure 7: Health monitoring features.
4.6 5ATM Waterproof
The Mibro Lite3 Pro supports professional swimming mode, tracking metrics like stroke recognition (freestyle, backstroke, breaststroke, butterfly), stroke count & frequency, average pace, speed allocation, SWOLF, and swimming heart rate monitoring.

Figure 8: Swimming mode features.
4.7 Always On Display (AOD)
The AOD feature allows the watch dial style to remain visible, changing from the default dial to a simplified version when not actively in use. The screen brightness adapts with 255 levels based on ambient light.
4.8 NFC Access Control
The Mibro Lite3 Pro supports NFC access control for convenient entry where compatible systems are available.
5. Maintenance
5.1 Cleaning
Regularly clean your smartwatch and straps to maintain hygiene and appearance. Use a soft, damp cloth to wipe the watch body. For silicone straps, mild soap and water can be used. For leather straps, wipe with a dry cloth and avoid excessive moisture.
5.2 Water Resistance Precautions
While the Mibro Lite3 Pro is 5ATM waterproof and supports professional swimming, it is crucial to observe the following:
- Do NOT wear the watch for activities such as surfing, diving, or soaking in hot springs.
- Avoid exposing the watch to high-temperature and high-humidity environments (e.g., saunas, hot showers).
- The leather strap is not suitable for bathing, swimming, or other water activities. Use the silicone strap for water-related activities.
5.3 Battery Care
To prolong battery life and ensure optimal performance:
- Charge the watch fully before first use.
- Avoid completely draining the battery frequently.
- Use the provided magnetic charger.
- Store the watch in a cool, dry place when not in use for extended periods.

Figure 9: Battery life modes and usage details.
6. Troubleshooting
6.1 Watch Not Turning On
Ensure the watch is fully charged. Connect it to the magnetic charger and leave it for at least 30 minutes before attempting to power it on again.
6.2 Pairing Issues
If you encounter difficulties pairing:
- Make sure Bluetooth is enabled on your phone and the watch is within range.
- Restart both your phone and the smartwatch.
- Ensure the Mibro Fit App is updated to the latest version.
- Forget the device in your phone's Bluetooth settings and try pairing again through the app.
6.3 Inaccurate GPS Readings
GPS accuracy can be affected by environmental factors. For best results:
- Ensure you are in an open outdoor area with a clear view of the sky.
- Wait for the watch to acquire a stable GPS signal before starting your activity.
- Sync your watch with the Mibro Fit App regularly to update satellite data.
6.4 Short Battery Life
If battery life is shorter than expected:
- Reduce screen brightness or set it to automatic.
- Limit the use of power-intensive features like continuous GPS tracking or frequent Bluetooth calls.
- Disable unnecessary notifications.
- Ensure the watch firmware is up to date.
7. Specifications
Here are the detailed specifications for the Mibro Lite3 Pro Smartwatch:
| Feature | Specification |
|---|---|
| Model | Mibro Lite3 Pro |
| Dimensions | 44.7*44.7*11.9mm |
| Weight | 57.15g (With Leather Strap) |
| Display | 1.32 Inch UHD AMOLED Screen, 466*466 Pixels |
| Screen Material | AMOLED |
| Case Material | Alloy / Metal |
| Strap Material | Leather & Rubber |
| Band Width | 22mm |
| Battery Capacity | 300-450mAh |
| Battery Life (Basic Mode) | 50 days |
| Battery Life (Daily Mode) | 15 days |
| Battery Life (Call Mode) | 7 hours |
| Battery Life (GPS Mode) | 15 hours |
| Charging | Magnetic charging |
| Bluetooth Version | 5.3 |
| Bluetooth Calling | Support |
| GPS | Built-in (GPS/Beidou/GLONASS/Galileo/QZSS) |
| Waterproof Grade | 5ATM Professional Waterproof |
| NFC Access Control | Support |
| Sports Modes | 150+ |
| Health Monitoring | Heart Rate, Blood Oxygen, Sleep, Stress, Women's Health |
| System | FreeRTOS |
| Compatibility | All Compatible (iOS & Android) |
| App Name | Mibro Fit App |
| Languages | English, Russian, Spanish, Polish, Portuguese, Turkish, Italian, French, German, Norwegian, Korean, Japanese, Ukrainian, Hebrew, Dutch, Arabic, Indonesian, Greek, Thai, Persian, Vietnamese, Danish, Swedish, Czech, Finnish, Slovenian, Hungarian, Romanian, Serbian, Estonian, Latvian, Lithuanian, Malay |
| Certifications | CE, FCC, RoHS |

Figure 10: Mibro Watch Lite3 Pro vs. Lite 2 vs. Lite comparison.

Figure 11: Mibro Lite3 Pro dimensions.
8. User Tips
- Customize Watch Faces: Explore the Mibro Fit App for a wide variety of watch faces to match your style and needs.
- Optimize Notifications: Manage which app notifications appear on your watch through the Mibro Fit App to avoid distractions and save battery.
- Regular Syncing: Sync your watch with the app daily to ensure all your health and activity data is backed up and analyzed.
- Firmware Updates: Check for and install firmware updates via the Mibro Fit App to get the latest features and performance improvements.
- Strap Choice: Use the silicone strap for intense workouts or water activities, and the leather strap for a more formal or casual look.
9. Support
For further assistance, technical support, or warranty information, please refer to the official Mibro website or contact their customer service directly. Ensure you have your product model and serial number ready when seeking support.
10. Product Video
Watch this video for a visual overview of the Mibro Lite3 Pro Smartwatch features and usage scenarios.
Video 1: Mibro Lite3 Pro Smartwatch features and lifestyle.