1. Introduction
The COLMI I31 Smartwatch is a versatile and feature-rich device designed to enhance your daily life and fitness journey. It boasts a vibrant 1.43-inch AMOLED display, over 100 sports modes, Bluetooth calling capabilities, and advanced health monitoring features. This manual provides essential information on how to set up, operate, maintain, and troubleshoot your smartwatch to ensure optimal performance.
2. Package Contents
Please check the box for the following items:
- COLMI I31 Smartwatch
- Magnetic USB Charging Cable
- User Manual

3. Specifications
| Feature | Specification |
|---|---|
| Model | COLMI I31 |
| Display Size | 1.43 inches |
| Screen Material | AMOLED |
| Resolution | 466*466 pixels, 326 PPI |
| Touch Screen | Full touch |
| CPU Model | Realtek RTL8763E |
| BLE SOC | RTL8763EWE-VP |
| Storage | RAM270KB ROM128Mb |
| Battery Capacity | 250 mAh |
| Battery Life | 5-7 days |
| Charging Method | Magnetic charging |
| Waterproof Grade | IP67 Professional Waterproof |
| Companion App | FitCloudPro |
| Bluetooth Version | 5.2 |
| Compatibility | Android 4.4+ or iOS 9.0+ |
| Band Material | Silica Gel |
| Case Material | Plastic |
| Band Width | 20mm |
| Voice Assistant | Yes |
| Metrics Measured | Heart Rate, Blood Oxygen, Sleep, Stress |
| Activity Tracked | Steps, Calories, Distance, Activity, 100+ Sports Modes |
| Multiple Dials | Yes (200+ watch faces, custom) |
| Always On Display | Yes |
| GPS | No |
| SIM Card | No |
| Wi-Fi | No |
| Supported Languages | English, Russian, Spanish, Polish, Portuguese, Italian, French, German, Japanese, Ukrainian, Dutch, Arabic, Indonesian, Czech, Egyptian, Vietnamese, Chinese |

4. Initial Setup
4.1 Charging the Smartwatch
Before first use, fully charge your COLMI I31 Smartwatch. Connect the magnetic charging cable to the charging points on the back of the watch and plug the USB end into a low-power adapter (e.g., 5V/1A) or a computer's USB port. Avoid using fast-charging adapters as they may damage the watch over time.
4.2 App Download and Installation
The COLMI I31 Smartwatch uses the FitCloudPro app for full functionality. To download:
- On your smartwatch, navigate to the settings menu and locate the 'QR code' option.
- Scan the displayed QR code with your smartphone to download the FitCloudPro app.
- Alternatively, search for 'FitCloudPro' in your smartphone's app store (Google Play Store for Android, Apple App Store for iOS) and install it.
4.3 Pairing with Your Smartphone
To pair your smartwatch with the app:
- Ensure Bluetooth is enabled on your smartphone.
- Open the FitCloudPro app.
- Follow the in-app instructions to search for and connect to your COLMI I31 Smartwatch.
- Confirm the pairing request on both your phone and the watch.
5. Operating Your Smartwatch
5.1 Basic Navigation
The COLMI I31 features a full touch screen for easy navigation. Swipe left, right, up, or down to access different menus and functions. Tap to select items.
5.2 Bluetooth Calling
Once paired with your phone, you can answer and dial calls directly from your smartwatch. This feature allows for hands-free communication.

5.3 Notifications
Receive message reminders and call alerts directly on your watch. This ensures you don't miss important information, even when your phone is not immediately accessible.

5.4 Health Monitoring
The smartwatch offers comprehensive health tracking:
- 24/7 Heart Rate Monitor: Continuously tracks your heart rate.
- Blood Oxygen Sensor: Measures your blood oxygen levels.
- Sleep Tracker: Monitors your sleep patterns (deep, light, awake).
- Stress Monitor: Helps you understand and manage your stress levels.
- Breathe: Guided breathing exercises.
- Drink Water Reminder: Prompts you to stay hydrated.
- Reminder to Move: Encourages activity after periods of inactivity.
- Women's Physiological Cycle: Tracks menstrual cycles.


5.5 Sports Modes
The watch supports over 100 exercise modes, tracking various activities such as walking, running, cycling, swimming, and more. It records steps, calories, and distance, providing detailed sports data reports through the app.

5.6 Always On Display (AOD)
The Always On Display feature allows the time and other critical information to remain visible on the screen without needing to raise your wrist or activate the display fully.

5.7 Watch Faces
Customize your smartwatch with over 200 watch faces available through the FitCloudPro app. You can also set custom watch faces using your favorite pictures.

5.8 Music Control
Control your smartphone's music player directly from your watch. You can play, pause, skip tracks, and adjust volume.

5.9 Other Features
The smartwatch also includes:
- Alarm clock
- Timer
- Weather updates
- Camera remote control
- Find phone function
- Calculator
- 2 built-in games
- 4 user interface styles
- Voice assistant
6. Maintenance and Care
6.1 Cleaning
Regularly clean your smartwatch and strap with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
6.2 Water Resistance
The COLMI I31 is IP67 Professional Waterproof, meaning it can withstand daily splashes, sweat, and light rain. It can be submerged in water up to 1.5 meters for 30 minutes. However, it is not recommended for:
- Saunas or hot water environments
- Diving or high-pressure water activities
- Using the watch actively while swimming (e.g., pressing buttons underwater)

6.3 Battery Care
To prolong battery life, avoid fully discharging the watch frequently and use a low-power adapter for charging. Do not expose the watch to extreme temperatures.
7. Troubleshooting
- Q: The watch is not turning on or charging.
- A: Ensure the magnetic charging cable is correctly aligned with the charging points on the watch. Try plugging the USB cable into a different USB port or a low-power adapter. Allow the watch to charge for at least 30 minutes before attempting to turn it on.
- Q: I cannot connect the watch to the FitCloudPro app.
- A: Make sure Bluetooth is enabled on your smartphone. Restart both your smartphone and the smartwatch. Ensure the FitCloudPro app is updated to the latest version. If issues persist, try unpairing and re-pairing the device through the app.
- Q: Can I reply to messages from the smartwatch?
- A: The COLMI I31 Smartwatch supports message reminders and call alerts, but it does not support replying to messages directly from the watch.
- Q: Does the watch have built-in GPS?
- A: No, the COLMI I31 Smartwatch does not have built-in GPS.
- Q: Does the watch have NFC for payments?
- A: No, the COLMI I31 Smartwatch does not feature NFC.
- Q: Can I install other applications on the watch?
- A: No, the smartwatch does not support the installation of third-party applications.
- Q: Does the watch have a photo gallery or can I view pictures on it?
- A: No, the COLMI I31 Smartwatch does not have a photo gallery feature or the ability to view pictures.
- Q: Does the watch measure blood pressure?
- A: The watch measures heart rate, blood oxygen, sleep, and stress. Blood pressure monitoring is not explicitly listed as a feature.
8. User Tips
- Charging: Always use a low-power adapter (e.g., 5V/1A) or a computer USB port for charging to help prolong the smartwatch's battery life. Avoid fast chargers.
- Water Resistance: While the watch is IP67 waterproof, it's best to avoid saunas, hot water, and actively using the watch (e.g., pressing buttons) while swimming to prevent potential damage.
- Connectivity: If you experience issues connecting to the FitCloudPro app, ensure Bluetooth is active on your phone and try restarting both your watch and phone.
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.





