LEMFO K55 Smart Watch User Manual

1. Introduction

The LEMFO K55 Smart Watch is a rugged and versatile fitness tracker designed for outdoor enthusiasts and daily use. Featuring a durable military-standard build, a vibrant 1.85-inch IPS HD screen, and comprehensive health monitoring capabilities, it keeps you connected and informed. With Bluetooth calling, multiple sport modes, and a long-lasting battery, the K55 is your reliable companion for an active lifestyle.

Figure 1: LEMFO K55 Smart Watch Overview

2. Key Features

• Military-Standard Durability: Sturdy and durable body designed to withstand various challenging environments.
• 1.85-inch IPS HD Screen: Large, high-definition display offering clear visibility even under direct sunlight.
• Bluetooth Calling: Make, answer, or reject calls directly from your watch using the built-in waterproof speaker and microphone. Access contacts and call logs.
• Comprehensive Health Monitoring:
  • PPG Biotracking Sensor for accurate heart rate, blood pressure, and blood oxygen monitoring.
  • Sleep monitoring and breathing rate tracking.
  • Detection of irregular heartbeats to help understand your health status.
• Multiple Sport Modes: Supports over 20 sport modes, including running, cycling, skipping, badminton, basketball, football, climbing, tennis, weightlifting, and dumbbell exercises. Features professional movement algorithms and intelligent identification of movement patterns to quantify exercise data.
• Long Battery Life: Equipped with a 350mAh battery and low-power chip, providing up to 20 days of standby time and 5-7 days of working time.
• Smart Reminders: Synchronous display of messages, calls, and social media app notifications.
• Customizable Watch Faces: Choose from a variety of fashionable dials or personalize with your own pictures.
• Additional Smart Functions: AI Voice assistant, breathing training, music control, remote camera, calculator, weather reports, alarm clock, stopwatch, timer, find phone, and theater mode.

Figure 2: Summary of Key Features

3. Technical Specifications

Figure 3: Product Parameters and Dimensions

4. Initial Setup

4.1. Charging the Watch

Before first use, fully charge your LEMFO K55 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. The watch features a 350mAh battery, providing approximately 5-7 days of active use and up to 20 days of standby time on a full charge.

Figure 4: Charging the Smart Watch

4.2. App Installation and Pairing

1. Download the App: Search for "Da Fit" in your smartphone's app store (Google Play Store for Android or Apple App Store for iOS) and install it.
2. Enable Bluetooth: Ensure Bluetooth is enabled on your smartphone.
3. Open Da Fit App: Launch the "Da Fit" app and follow the on-screen instructions to create an account or log in.
4. Add Device: In the app, navigate to the "Device" or "Add Device" section. The app will search for nearby Bluetooth devices.
5. Select K55: Select "K55" from the list of available devices to pair. Confirm the pairing request on both your phone and the watch if prompted.
6. Grant Permissions: Allow necessary permissions (e.g., notifications, location, contacts) for the app to function correctly.

The watch is compatible with Android 4.4 and above, and iOS 8.0 and above.

5. Operating Instructions

5.1. Basic Navigation

The LEMFO K55 features a full-touch IPS HD 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 smartphone, you can manage calls directly from your watch:

• Answering/Rejecting Calls: When an incoming call is received, you can answer or reject it directly on the watch screen.
• Dialing: Use the dial pad on the watch to make calls.
• Contacts/Call Logs: Access your phone book and review call history directly from the watch.

Figure 5: Bluetooth Calling Interface

5.3. Sport Modes

The watch supports over 20 sport modes. Select your desired activity to track specific metrics such as heart rate, mileage, speed, and calorie consumption. The professional movement algorithm helps quantify your exercise data for scientific training.

• Available Modes: Running, Cycling, Skipping, Badminton, Basketball, Football, Climbing, Tennis, Weightlifting, Dumbbell, and more.
• Data Sync: Exercise data can be synced to the "Da Fit" app for detailed analysis.

Figure 6: Diverse Sport Modes

5.4. Health Monitoring

Utilize the PPG Biotracking sensor for continuous health tracking:

• Heart Rate Monitor: Measure your heart rate in real-time.
• Blood Oxygen Monitor: Check your blood oxygen levels.
• Blood Pressure Monitor: Monitor your blood pressure.
• Sleep Monitor: Track your sleep patterns and quality.
• Breathing Rate: Monitor your breathing rate.

All health data can be synced with the "Da Fit" app for a comprehensive overview of your well-being.

Figure 7: PPG Biotracking Sensor for Health Monitoring

5.5. Notifications and Reminders

Receive real-time notifications for incoming calls, messages, and alerts from social media applications directly on your watch. Ensure the "Da Fit" app has the necessary permissions enabled on your smartphone.

5.6. Watch Faces

Customize your watch's appearance by choosing from a variety of pre-installed watch faces or create your own using personal photos through the "Da Fit" app.

Figure 8: Multiple Watch Faces

5.7. Other Functions

The watch includes several other convenient features:

• AI Voice Assistant: Interact with your watch using voice commands.
• Breathing Training: Guided breathing exercises for relaxation.
• Music Control: Control music playback on your smartphone.
• Remote Camera: Use your watch as a remote shutter for your phone's camera.
• Calculator, Weather, Alarm Clock, Stopwatch, Timer: Essential utility tools.
• Find Phone: Locate your paired smartphone.
• Theater Mode: Adjust screen brightness and disable vibrations for undisturbed viewing.

Figure 9: Convenient Smart Functions

6. 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.
• Water Resistance: The watch is IP67 rated (Life Waterproof). This means it can withstand splashes, rain, and brief immersion. Avoid hot water, steam, or prolonged submersion. Do not operate buttons underwater.
• Strap Care: The silicone strap is skin-friendly. If irritation occurs, clean the strap and ensure it's not too tight.
• Avoid Extreme Conditions: Do not expose the watch to extreme temperatures, direct sunlight for extended periods, or corrosive chemicals.
• Charging: Use only the provided magnetic charging cable. Ensure the charging contacts are clean and dry before charging.

7. Troubleshooting

Watch not turning on:

Ensure the watch is fully charged. Connect it to the magnetic charger and wait a few minutes before attempting to power it on.

Unable to pair with smartphone:

• Make sure Bluetooth is enabled on your phone.
• Ensure the "Da Fit" app is installed and open.
• Check if the watch is within Bluetooth range of your phone.
• Restart both your watch and smartphone, then try pairing again.
• If previously paired, try unpairing and re-pairing the device in your phone's Bluetooth settings and the app.

Notifications not appearing:

• Verify that the "Da Fit" app has notification permissions enabled in your phone's settings.
• Ensure the watch is properly connected via Bluetooth.
• Check the notification settings within the "Da Fit" app to ensure notifications for desired apps are turned on.
• Disable "Do Not Disturb" or "Theater Mode" on your watch if active.

Inaccurate health data:

• Ensure the watch is worn snugly on your wrist, not too loose or too tight.
• Keep the sensor clean and free from debris.
• Avoid excessive movement during measurements.
• Note that smartwatches are not medical devices and data is for reference only.

Short battery life:

• Reduce screen brightness.
• Limit frequent screen wake-ups.
• Turn off continuous heart rate monitoring if not needed.
• Close unnecessary background apps on the watch (if applicable).
• Ensure the watch is fully charged each time.

8. User Tips

• Optimize Display: The 1.85-inch IPS screen is bright even outdoors. Adjust brightness settings to conserve battery life when indoors.
• Explore Sport Modes: With over 20 sport modes, experiment to find the best tracking for your activities. Remember to sync data to the Da Fit app for detailed insights.
• Stay Connected: Utilize the Bluetooth calling feature for hands-free communication, especially during workouts or when your phone is not easily accessible.
• Personalize Your Watch: Take advantage of customizable watch faces to match your style or mood.
• Regular Health Checks: Make a habit of checking your heart rate, blood oxygen, and blood pressure. While not a medical device, consistent monitoring can help you stay aware of your body's trends.
• App Integration: Fully leverage the "Da Fit" app for detailed health reports, exercise history, and managing watch settings.

9. Warranty and Support

The LEMFO K55 Smart Watch comes with a 12-month manufacturer's limited warranty for defective items from the date of receipt. Accessories are covered by a 3-month warranty. This warranty does not cover items damaged or misused after receipt.

For warranty claims or technical support, please contact your retailer or the manufacturer directly with your order number and a description of the issue.

The package includes:

• 1 * Smart Watch
• 1 * Charging Cable
• 1 * User Manual (English, French, German, Italian, Spanish, Japanese)