1. Introduction
Welcome to the user manual for your new LIGE Military Smart Watch, Model ST9-A-HSJ. This guide provides detailed instructions on how to set up, operate, maintain, and troubleshoot your device. Please read this manual thoroughly to ensure optimal performance and longevity of your smartwatch.
2. Product Overview
The LIGE Military Smart Watch is designed for durability and functionality, featuring a robust build and a wide array of smart features.
Key Features:
- Military-Grade Durability: Constructed with special composite materials and a metal shell, designed to withstand various environmental conditions including temperature extremes, low pressure, dust, salt spray, and fluid contamination.
- Bluetooth Calling & Speaker: Make and receive calls directly from your wrist, with a built-in speaker for audio playback.
- Smart Notifications: Receive alerts for calls, SMS, and app notifications (Facebook, Twitter, WhatsApp, LinkedIn, Messenger, Instagram).
- Extensive Sports Modes: Track your activities with over 120 sports modes, including running, walking, cycling, and more. Monitors steps, distance, and calories.
- Health Monitoring: Integrated sensors for heart rate, blood oxygen (SpO2), blood pressure, and sleep tracking.
- High-Definition Display: 1.83-inch HD touchscreen with 240x286 resolution.
- Customizable Watch Faces: Choose from pre-installed dials, download more from the app, or create your own personalized watch face.
- Long Battery Life: Up to 15 days of daily use and 40 days on standby.
Components:
The LIGE Military Smart Watch consists of the main watch unit, interchangeable straps, and a magnetic charging cable.

Figure 2.1: The LIGE Military Smart Watch, showcasing its rugged design and an alternative strap option.

Figure 2.2: Display features and rugged specifications of the smartwatch.
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. Ensure the pins align correctly.
- Plug the USB end of the cable into a standard USB power adapter (5V/1A recommended) or a computer's USB port.
- The watch display will indicate charging status. A full charge typically takes approximately 2 hours.

Figure 3.1: Charging the smartwatch and expected battery life.
3.2 App Installation and Pairing
To unlock the full potential of your LIGE Smart Watch, download and install the official companion app on your smartphone.
- Scan the QR code provided in the watch's packaging or search for the official app (refer to the watch's quick start guide for the exact app name) in your smartphone's app store (Google Play Store for Android, Apple App Store for iOS).
- Install the app and open it. Follow the on-screen prompts to create an account or log in.
- Ensure Bluetooth is enabled on your smartphone.
- In the app, navigate to the "Device" or "Add Device" section. The app will search for nearby smartwatches.
- Select "ST9-A-HSJ" or the corresponding model name from the list of found devices to initiate pairing.
- Confirm the pairing request on both your watch and smartphone.
Note: Grant all necessary permissions requested by the app for full functionality, including notifications, location, and background activity.
3.3 Initial Configuration
After successful pairing, configure your personal profile within the app. This includes setting your gender, birth date, height, and weight to ensure accurate health and activity tracking.
4. Operating Instructions
4.1 Basic Navigation
- Touchscreen: Swipe left/right to navigate between main functions, swipe up/down for quick settings or notifications. Tap to select.
- Side Buttons: The watch features side buttons for power, back, or quick access to sports modes. Refer to the watch's on-screen prompts for specific button functions.
- Wrist-Turn Activation: Raise your wrist to automatically wake the screen. This feature can be enabled/disabled in the app settings.
4.2 Bluetooth Calling
Once connected via Bluetooth, you can manage calls directly from your watch.
- Making Calls: Access the dial pad or contact list on your watch to initiate a call.
- Receiving Calls: When a call comes in, the watch will display the caller ID. You can answer or reject the call from your wrist.
- Audio: The built-in speaker and microphone allow for hands-free communication.

Figure 4.1: Managing Bluetooth calls on the smartwatch.

Figure 4.2: Hands-free communication via the smartwatch.
4.3 Notifications
Your smartwatch can display notifications from your paired smartphone.
- Ensure notification permissions are granted in your phone's settings and within the companion app.
- The watch will vibrate and display incoming messages or app alerts.
- Supported apps include Facebook, Twitter, WhatsApp, LinkedIn, Messenger, Instagram, and more.

Figure 4.3: Message and phone call reminders on the smartwatch.
4.4 Sports Modes
The watch supports over 120 sports modes to accurately track your workouts.
- Navigate to the "Sports" or "Workout" section on your watch.
- Select your desired activity (e.g., running, walking, cycling, basketball, football).
- The watch will begin recording data such as duration, steps, distance, and calories burned.
- End your workout by following the on-screen instructions. Data will sync to the app.

Figure 4.4: Tracking activities with 120+ sports modes.

Figure 4.5: The smartwatch's multi-functional capabilities during exercise.
4.5 Health Monitoring
The watch provides continuous health monitoring.
- Heart Rate: Monitors your heart rate throughout the day.
- Blood Oxygen (SpO2): Measures your blood oxygen saturation levels.
- Blood Pressure: Provides estimated blood pressure readings.
- Sleep Monitor: Tracks your sleep patterns, including deep sleep, light sleep, and awake time.
- Stress Estimate: Provides an estimate of your stress levels based on physiological data.
Important: The health data provided by this device is for reference only and should not be used for medical diagnosis or treatment. Consult a medical professional for any health concerns.

Figure 4.6: Health and sleep monitoring features.

Figure 4.7: Comprehensive health data displayed on the smartwatch.
4.6 Other Functions
Your LIGE Smart Watch includes several other useful features:
- Music Control: Control music playback on your smartphone (play, pause, skip tracks).
- Remote Photography: Use your watch as a remote shutter for your phone's camera.
- Weather Forecast: Get real-time weather updates.
- Alarm Clocks: Set multiple alarms.
- Stopwatch & Timer: Built-in timing functions.
- Sedentary & Drinking Water Reminders: Customizable alerts to encourage activity and hydration.
- Find Phone: Locate your misplaced phone by making it ring.
4.7 Customizing Watch Faces
Personalize your watch with a variety of watch faces.
- Pre-installed Dials: Swipe on the watch face to switch between pre-installed options.
- App Store Dials: Open the companion app and browse the "Dial Market" or "Watch Face Store" for over 100 additional designs.
- DIY Watch Faces: Use the app to upload your own photos and create a unique watch face.

Figure 4.8: Customizable dials and multi-functional icons.

Figure 4.9: Personalizing your watch with custom watch faces.
5. Maintenance
5.1 Cleaning Your Smart Watch
Regular cleaning helps maintain the watch's appearance and functionality.
- Wipe the screen and body with a soft, lint-free cloth.
- For stubborn smudges, dampen the cloth slightly with water. Avoid harsh chemicals or abrasive materials.
- Clean the charging contacts periodically to ensure good connection.
5.2 Water Resistance (IP68)
The LIGE Military Smart Watch is IP68 waterproof, meaning it is resistant to dust and can withstand immersion in water up to 1.5 meters for up to 30 minutes.
- It is suitable for daily use, hand washing, and light rain.
- Avoid hot water, saunas, or diving, as steam and high pressure can compromise the seal.
- Do not operate buttons underwater.
- If the watch gets wet, wipe it dry before charging.
5.3 Battery Care
- Avoid fully discharging the battery frequently.
- Store the watch with some charge if not used for extended periods.
- Use only the provided charging cable.
6. Troubleshooting
| Problem | Solution |
|---|---|
| Watch does not turn on. | Ensure the watch is fully charged. If it still doesn't turn on, try a hard reset (refer to specific model instructions or contact support). |
| Cannot pair with smartphone. |
|
| Notifications not received. |
|
| Inaccurate health data. |
|
| Short battery life. |
|
7. Specifications
| Feature | Specification |
|---|---|
| Model | ST9-A-HSJ |
| Brand | LIGE |
| Display Size | 1.83 Inches |
| Display Resolution | 240 x 286 HD |
| Display Technology | LCD |
| Operating System | Compatible with Android, iOS |
| Memory Storage Capacity | 256 MB |
| Battery Capacity | 380 mAh (Lithium Polymer) |
| Battery Life (Typical Use) | Up to 15 days |
| Battery Life (Standby) | Up to 40 days |
| Charging Time | Approx. 2 hours |
| Water Resistance | IP68 |
| Connectivity | Bluetooth |
| Human Interface Input | Touchscreen |
| Product Dimensions | 17.78 x 5.08 x 7.62 cm; 160 g |
8. Warranty and Support
For warranty information and customer support, please refer to the warranty card included in your product packaging or contact the seller/manufacturer directly. Keep your purchase receipt as proof of purchase.
For further assistance, visit the official LIGE website or contact their customer service team.







