1. Introduction
The HENGTO Kids Fitness Tracker Watch is designed to encourage an active lifestyle for children while providing useful health and activity monitoring features. This smart watch is equipped with a pedometer, heart rate monitor, sleep tracker, and supports 19 different sport modes. It also includes smart reminders and customizable watch faces, all within a durable and waterproof design.

The HENGTO Kids Fitness Tracker Watch features a vibrant pink strap and a square display, designed for comfortable wear by children.
2. Setup Guide
2.1 Charging the Watch
Before first use, fully charge the watch. A full charge typically takes about 2 hours.
- Locate the magnetic charging cable included in the package.
- Align the magnetic end of the cable with the charging contacts on the back of the watch. The magnets will snap it into place.
- Connect the USB-A end of the cable to a standard USB power adapter (5V/1A recommended) or a computer USB port.
- The watch screen will display a charging indicator.

The watch features a magnetic charging port for easy connection. A full charge provides up to 6 days of normal use and 30 days of standby time.
2.2 App Installation and Pairing
To unlock the full features of your HENGTO Kids Fitness Tracker Watch, you need to install the companion application on a smartphone or tablet and pair the devices.
- Download the App: Scan the QR code displayed on the watch screen (if available) or search for the official HENGTO fitness app in your device's app store (e.g., Apple App Store or Google Play Store).
- Create an Account: Open the app and follow the on-screen instructions to create a new user account.
- Enable Bluetooth: Ensure Bluetooth is enabled on your smartphone or tablet.
- Pair the Watch: In the app, navigate to the device pairing section. Select your HENGTO watch from the list of available devices. The app may prompt you to confirm pairing on the watch screen.
- Initial Configuration: Once paired, follow the app's instructions to set up user profiles (e.g., child's age, height, weight for accurate tracking), time format, and other preferences.
3. Operating the Watch
3.1 Display and Navigation
The watch features a 1.4-inch color touchscreen with adjustable brightness. Lift your wrist to automatically light up the display.
- Swipe Up/Down: Navigate through menus and notifications.
- Swipe Left/Right: Access quick views like activity data, heart rate, or sport modes.
- Tap: Select an option or enter a menu.
- Side Button: Typically used to return to the home screen or wake the device.
3.2 Activity Tracking
The watch automatically tracks daily activity metrics.
- Pedometer: Counts steps taken throughout the day.
- Distance: Estimates distance covered based on steps and stride length.
- Calories Burned: Calculates estimated calories burned based on activity and user profile.

The watch continuously tracks daily activity, including heart rate, distance, calories burned, and steps taken, providing a comprehensive overview of a child's movement.
3.3 Sport Modes
The watch supports 19 dedicated sport modes for more accurate tracking during specific activities.
- To start a sport mode, navigate to the 'Sport' menu on the watch.
- Select the desired activity (e.g., Running Outdoors, Walking Outdoors, Indoor Running, Basketball, Swimming, Stepper, Table Tennis, Rope Skipping, Football, Ski, etc.).
- Tap to begin tracking. The watch will display real-time data relevant to the chosen activity.
- Tap again or use the side button to pause or end the activity.

The watch supports 19 different sport modes, including running, walking, swimming, and basketball, to track various physical activities.
3.4 Heart Rate Monitoring
The watch can automatically monitor heart rate throughout the day.
- Ensure the watch is worn snugly on the wrist, about one finger's width above the wrist bone.
- To view real-time heart rate, swipe to the heart rate interface on the watch.
- Historical heart rate data can be viewed in the companion app.
3.5 Sleep Monitoring
The watch automatically tracks sleep patterns when worn during sleep.
- Wear the watch to bed for automatic sleep tracking.
- The watch records sleep duration and identifies different sleep stages (deep sleep, light sleep).
- Detailed sleep analysis and trends are available in the companion app.
- A vibrating alarm can be set via the app to wake the child gently without disturbing others.

The watch automatically monitors sleep patterns, distinguishing between deep and light sleep, to help understand and improve sleep quality.
3.6 Smart Reminders
Set various smart reminders through the companion app to help children develop healthy habits.
- Drink Water Reminders: Prompts the child to drink water at set intervals.
- Alarm Clock: Set multiple alarms for waking up, homework, or other activities.
- Text Reminders: Receive notifications for incoming messages from a paired smartphone (Note: The watch cannot answer or make phone calls).
- Other Reminders: Includes medication reminders and birthday reminders.

Smart reminders can be set for various purposes, such as medication alerts, hydration reminders, and birthday notifications, to help children build healthy habits.
3.7 Custom Watch Faces
Personalize the watch display with custom watch faces.
- Through the companion app, you can select from various pre-installed watch faces.
- You can also upload personal photos (e.g., family, pets, landscapes) from your smartphone to set as the watch background.

Users can personalize the watch face by uploading photos from a connected smartphone, allowing for unique customization.
4. Maintenance
4.1 Waterproofing (IP68)
The HENGTO Kids Fitness Tracker 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. This makes it suitable for daily use, including hand washing, showering, and swimming.
- Avoid prolonged exposure to hot water, steam, or saunas, as this may compromise the waterproof seal.
- Do not press buttons underwater.
- After exposure to saltwater, rinse the watch with fresh water and dry it thoroughly.
4.2 Cleaning
Regular cleaning helps maintain the watch's appearance and hygiene.
- Wipe the watch screen and body with a soft, damp, lint-free cloth.
- For the silicone strap, you can use mild soap and water to clean it, especially if it starts to accumulate sweat or odor. Rinse thoroughly and dry completely before wearing.
- Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the watch's finish or components.
5. Troubleshooting
This section addresses common issues you might encounter with your HENGTO Kids Fitness Tracker Watch.
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch not turning on or charging. | Low battery; improper charging connection; faulty charger/cable. | Ensure the magnetic charging cable is correctly aligned and connected. Try a different USB power source or cable. Allow the watch to charge for at least 30 minutes before attempting to turn it on. |
| Inaccurate activity tracking (steps, heart rate). | Loose fit; incorrect personal information in app; watch worn incorrectly. | Ensure the watch is worn snugly on the wrist, not too tight or too loose. Verify that the child's personal information (age, height, weight) is accurately entered in the companion app. |
| Watch not connecting to the app. | Bluetooth off; app not running; watch not discoverable; app glitch. | Ensure Bluetooth is enabled on your smartphone/tablet. Restart both the watch and the app. Try unpairing and re-pairing the watch through the app's settings. Update the app to the latest version. |
| Short battery life. | Frequent use of power-intensive features; high brightness; continuous heart rate monitoring. | Reduce screen brightness. Limit continuous heart rate monitoring if not needed. Ensure background app refresh is optimized. A full charge should last up to 6 days with normal use. |
| Side button unresponsive. | Software glitch; physical damage. | Try restarting the watch. If the issue persists after a restart, and there is no visible physical damage, contact customer support. |
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | H39plus |
| Product Dimensions | 1.97 x 1.18 x 0.39 inches (5 x 3 x 1 cm) |
| Item Weight | 3.52 ounces (0.1 Kilograms) |
| Screen Size | 1.4 Inches |
| Display Type | Color Touchscreen |
| Water Resistance | IP68 (Waterproof up to 1.5 meters for 30 minutes) |
| Battery Type | Lithium Polymer (1 included) |
| Battery Life | Up to 6 days (normal use), 30 days (standby) |
| Charging Time | Approx. 2 hours |
| Connectivity | Bluetooth, USB (for charging) |
| Special Features | Heart Rate Monitor, Pedometer, Sleep Monitor, 19 Sport Modes, Alarm Clock, Time Display, Calorie Counting, Music Control, Remote Photo Taking, Smart Reminders |
| Strap Material | Silicone |
| Adjustable Strap Length | Fits wrists from 5 to 7.5 inches |

Designed for children, the watch has a comfortable silicone strap with an adjustable buckle, fitting wrists from 5 to 7.5 inches. The watch face measures approximately 41mm in height and 36mm in width.
7. Warranty and Support
For any questions, technical assistance, or warranty claims regarding your HENGTO Kids Fitness Tracker Watch, please contact the manufacturer or seller directly through the platform where the product was purchased. Refer to your purchase documentation for specific warranty terms and contact information.