1. Introduction
The LEMFO C25 Smart Watch is a robust and feature-rich wearable designed for active lifestyles. It combines advanced health monitoring, extensive sports tracking, and convenient Bluetooth calling capabilities in a durable, waterproof design. This manual provides essential information for setting up, operating, and maintaining your C25 Smart Watch.
Figure 1: LEMFO C25 Smart Watch (Black with Orange Accents)
2. Key Features
- 1.43-inch AMOLED HD Large Screen: Enjoy clear visuals with a 466*466 pixel high-resolution display.
- Bluetooth Calling: Make and receive calls directly from your watch using high-fidelity waterproof speakers and hands-free functionality.
- Health Monitoring: Accurately track heart rate, blood oxygen, and sleep patterns (23:00-05:00 sleep data).
- 100+ Sports Modes: Supports a wide range of activities with comprehensive exercise data recording for scientific training.
- 1ATM Waterproof: Designed to withstand water immersion up to 10 meters, suitable for swimming, hand washing, and rain.
- Extreme Durability: Passed 15 military-grade standard tests, including anti-cold (-40°C), high temperature resistance (80°C), dust resistance, drop resistance, and scratch-resistant glass.
- Long Battery Life: Equipped with a 410mAh pure cobalt battery and low-power Bluetooth chip, offering 7-15 days of daily use and 25-36 days of standby time.
- AI Voice Assistant: Interact with your watch using voice commands.
- Smart Notifications: Receive synchronous display of messages, calls, and social app notifications.
- Customizable Watch Faces: Choose from numerous well-crafted watch dials or create your own.
- Always-on Display: Check the time at any moment (requires manual activation in settings).
Figure 2: Overview of C25 Smart Watch Features
Figure 3: Blood Oxygen and Heart Rate Monitoring
Figure 4: Bluetooth Call and Notification Reminder
Video 1: LEMFO C25 Smart Watch Product Demonstration and Durability Tests
3. Specifications
Figure 5: Product Dimensions and Key Specifications
| Attribute | Value |
|---|---|
| Model | C25 |
| Screen Material | AMOLED |
| Display Size | 1.43 Inch |
| Resolution | 466*466 |
| Bluetooth Version | 5.2 |
| CPU Model | RTL8763E |
| RAM | <128MB |
| ROM | <128MB |
| Battery Capacity | 410mAh |
| Battery Life (Daily Use) | 7-15 days |
| Battery Life (Heavy Use) | 3-5 days |
| Standby Time | 25-36 days |
| Waterproof Grade | 1ATM (Life Waterproof) |
| Compatibility | Android 9.0 and above or iOS 9.0 and above |
| App Name | Da Fit |
| Metrics Measured | Heart Rate Monitor, Blood Oxygen Monitor, Sleep Monitor |
| Activity Tracked | Steps Tracker, Distance Tracker, Calorie Tracker, Activity Tracker |
| Case Material | Rubber |
| Band Material | Alloy |
| Screen Shape | Round |
| Application Age Group | Adult |
| Dial Size | 48.8*48.8mm |
| Dial Thickness | 12.6mm |
| Strap Width | 26.5mm |
| Total Length | 265mm |
| Item Weight | 70g |
| Supported Languages | English, Russian, Spanish, Portuguese, Italian, French, German, Korean, Japanese, Arabic, Danish, Ukrainian, Bulgarian, Hungarian, Bokmål, Norwegian, Hindi, Indonesian, Turkish, Hebrew, Greek, Czech, Slovak, Slovenian, Pashto, Polish, Persian, Thai, Swedish, Simplified Chinese, Traditional Chinese, Romanian, Finnish, Dutch, Vietnamese, Malay |
4. Package Contents
Please check the package contents upon receipt to ensure all items are present:
- 1 x LEMFO C25 Smart Watch
- 1 x Magnetic Charging Cable
- 1 x User Manual
5. Initial Setup
5.1 Charging the Smart Watch
Before first use, fully charge your smart watch. Connect the magnetic charging cable to the charging contacts on the back of the watch and plug the USB end into a standard USB power adapter (not included) or a computer USB port. The watch screen will indicate charging status.
5.2 App Download and Installation
To unlock the full functionality of your C25 Smart Watch, you need to download and install the companion app, Da Fit, on your smartphone.
- Scan the QR code provided in the included user manual or search for "Da Fit" in your smartphone's app store (Google Play Store for Android, Apple App Store for iOS).
- Download and install the app.
- Ensure your smartphone meets the compatibility requirements: Android 9.0 or above, or iOS 9.0 or above.
5.3 Pairing with Your Smartphone
After installing the Da Fit app, follow these steps to pair your watch:
- Enable Bluetooth on your smartphone.
- Open the Da Fit app and follow the on-screen instructions to create an account or log in.
- In the app, navigate to the device section and select "Add Device" or a similar option.
- The app will search for nearby Bluetooth devices. Select "C25" or the corresponding device name when it appears.
- Confirm the pairing request on both your watch and smartphone.
- Once paired, the watch will synchronize data with the app, and you can customize settings and view detailed health/activity data.
6. Operating Instructions
6.1 Basic Navigation
- Touch Screen: Swipe left/right, up/down to navigate through menus and features. Tap to select.
- Power Button (Right Side, Top): Press to wake/sleep the screen, long press to power on/off.
- Sport Button (Right Side, Bottom): Press to quickly access sports modes.
6.2 Customizing Watch Faces
You can change the watch face directly on the device or through the Da Fit app.
- On Watch: Long press the home screen, then swipe left/right to browse available watch faces. Tap to select.
- Via App: In the Da Fit app, go to the "Watch Faces" section to explore more options and upload custom designs.
Figure 6: Rich Watch Dial Options
6.3 Bluetooth Calling
Once paired, your watch can handle calls:
- Answering Calls: When an incoming call notification appears, tap the green phone icon to answer.
- Making Calls: Access the dial pad or contacts list on your watch to initiate a call.
6.4 Health Monitoring
The watch continuously monitors your health data:
- Heart Rate: Swipe to the heart rate interface to view real-time data. Detailed historical data is available in the Da Fit app.
- Blood Oxygen: Swipe to the SpO2 interface to measure your blood oxygen level.
- Sleep Tracking: The watch automatically tracks your sleep from 23:00 to 05:00. View sleep quality and duration in the app.
6.5 Sports Modes
The C25 Smart Watch supports over 100 sports modes. To start a workout:
- Press the Sport button or navigate to the sports mode menu.
- Select your desired activity (e.g., running, cycling, swimming).
- The watch will begin tracking your activity data.
- End the workout by following the on-screen prompts. All data will be synced to the Da Fit app.
6.6 AI Voice Assistant
Activate the AI Voice Assistant feature on your watch to perform tasks using voice commands. Ensure your watch is connected to your phone for this feature to work.
Figure 7: Always-on Display Settings
7. Care and Maintenance
- Cleaning: Regularly clean your watch and strap with a soft, dry cloth. If necessary, use a slightly damp cloth and mild soap, then rinse and dry thoroughly. Avoid harsh chemicals.
- Water Resistance: The watch is 1ATM waterproof (up to 10 meters). It is suitable for swimming, hand washing, and rain. However, avoid using it in hot water, saunas, or steam rooms, as steam can penetrate the seals and cause damage. Do not operate buttons underwater.
- Temperature Exposure: The watch is designed to withstand extreme temperatures from -40°C to 80°C. However, prolonged exposure to extreme heat or cold can affect battery life and performance.
- Charging: Use only the provided magnetic charging cable. Ensure the charging contacts are clean and dry before charging to prevent corrosion.
- Storage: When not in use for extended periods, store the watch in a cool, dry place.
8. Troubleshooting
If you encounter issues with your LEMFO C25 Smart Watch, try the following solutions:
- Watch not turning on: Ensure the watch is fully charged. Connect it to the charger for at least 30 minutes.
- Unable to pair with phone:
- Make sure Bluetooth is enabled on your phone.
- Ensure the watch is within Bluetooth range (typically 10 meters).
- Restart both your phone and the watch.
- Try unpairing and re-pairing the device through the Da Fit app.
- Notifications not received:
- Check notification permissions for the Da Fit app in your phone's settings.
- Ensure the watch is connected via Bluetooth.
- Verify that notification alerts are enabled in the Da Fit app settings for specific applications.
- Inaccurate health data:
- Ensure the watch is worn snugly on your wrist, not too tight or too loose.
- Clean the sensor on the back of the watch.
- Avoid excessive movement during measurements.
- Screen unresponsive: Restart the watch by long-pressing the power button. If unresponsive, allow the battery to drain completely and then recharge.
9. User Tips
- For optimal battery life, consider adjusting screen brightness and turning off unnecessary notifications.
- Explore the Da Fit app regularly for new watch faces and firmware updates to enhance your watch's performance and features.
- When using sports modes, ensure GPS is enabled on your phone if you require route tracking (for outdoor activities).
- The always-on display feature needs to be manually turned on in the watch settings.
10. Warranty and Support
The LEMFO C25 Smart Watch comes with a 12-month manufacturer's limited warranty for defective items from the date of receipt. Accessories included with the watch (such as the charging cable) typically come with a 3-month warranty.
This warranty does not cover items damaged due to misuse, accidents, unauthorized repairs, or normal wear and tear. Please retain your proof of purchase for warranty claims.
For technical support, warranty claims, or further assistance, please contact the seller or the official LEMFO customer service channel. Refer to the contact information provided at the point of purchase or on the official LEMFO website.
