Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Gydom Smart Watch GTX20. Please read this manual thoroughly before using the device to ensure proper function and longevity.

Image: Gydom Smart Watch GTX20, front view, black color.
What's Included
Upon unboxing your Gydom Smart Watch GTX20, please verify that all components are present:
- Gydom Smart Watch GTX20 (Main Unit)
- Silicone Strap
- Charging Cable
- User Manual (this document)

Image: Diagram showing the smart watch, silicone strap, user manual, and charging cable included in the package.
Setup Guide
1. Charging the Device
Before initial use, fully charge your Gydom Smart Watch GTX20. Connect the provided charging cable to the watch's charging port and a USB power source. A full charge typically takes approximately 2 hours.

Image: The smart watch connected to its charging cable, displaying a 56% charge and indicating a 14-day battery life.
2. App Installation and Pairing
The Gydom Smart Watch GTX20 operates with the VeryFit application. Follow these steps to pair your watch with your smartphone:
- Download the App: Search for "VeryFit" in your smartphone's App Store (iOS) or Google Play Store (Android) and install it.
- Enable Bluetooth and GPS: On your smartphone, ensure Bluetooth is turned on and GPS/Location services are enabled.
- Pair the Watch: Open the VeryFit app, navigate to the device section, and search for "GTX20". Select your watch to initiate the pairing process. Follow any on-screen prompts to complete the connection.

Image: Visual guide showing the three steps for pairing the smart watch: download VeryFit app, enable Bluetooth and GPS, and search for GTX20 in the app.
Compatibility: The Gydom Smart Watch GTX20 is compatible with Android 6.0+ and iOS 9.0+ devices.
Operating Instructions
Display and Navigation
The watch features a 1.85" AMOLED touch screen with 1500 nits brightness and 60 FPS for smooth interaction. Swipe across the screen to navigate through menus and tap to select options.

Image: Close-up of the smart watch screen highlighting its 1.85" AMOLED display, 1500 nits brightness, 324 PPI, and 60Hz refresh rate.
You can customize your watch face through the VeryFit app, choosing from over 100 available designs.

Image: Several Gydom smart watches displaying various customizable watch faces, emphasizing the AMOLED screen quality.
Communication Features
- Bluetooth Calling: Make and answer calls directly from your watch. The watch supports a built-in dial pad, call history, and frequent contacts.
- Message Notifications: Receive notifications from various social media platforms and messages directly on your watch. Note: Replying to messages is not supported directly from the watch.
- AI Voice Assistant: Utilize the built-in AI assistant for tasks such as setting alarms or playing music.

Image: A person driving while using the smart watch to make a Bluetooth call, showing the dial pad, call history, and contacts on the watch screen.

Image: A person interacting with the smart watch's AI voice assistant, with speech bubbles showing commands like "Siri, help me call Jerry" and "Siri, set a 5 minute timer."

Image: The smart watch displaying various message notifications from social media apps, with a note that message replies are not supported.
Health Monitoring
The GTX20 is equipped with a high-precision PPG sensor for continuous health tracking:
- Heart Rate Monitoring: Continuously tracks your heart rate throughout the day.
- Blood Oxygen (SpO2) Monitoring: Measures your blood oxygen levels.
- Sleep Monitoring: Analyzes your sleep patterns, including awake, light sleep, and deep sleep stages.
- Stress Monitoring: Provides insights into your stress levels.

Image: A person running on a treadmill, with the smart watch displaying heart rate data and a corresponding graph on a smartphone app.

Image: A person sleeping, with the smart watch displaying sleep stages (awake, light sleep, deep sleep) and a detailed sleep graph from the app.

Image: A person performing a plank exercise, with the smart watch displaying blood oxygen levels and a corresponding graph on a smartphone app.

Image: Two individuals, one male and one female, wearing smart watches, with the male's watch displaying stress levels and a graph from the app.
Activity Tracking and Sports Modes
The watch offers over 120 sports modes to track various activities. It provides precise data on calories burned, steps taken, distance covered, and heart rate during workouts.

Image: A cyclist wearing the smart watch, with an overlay showing the watch tracking daily steps, calories, and exercise distance, along with icons for various sports modes.
Video: An official product video from Gydom US showcasing the features of the GTX20 Smart Watch, including its AMOLED screen, call functionality, smart notifications, AI voice assistant, health monitoring (heart rate, blood oxygen, stress, sleep), 100+ sports modes, 3ATM waterproofing, long battery life, and customizable watch faces.
Additional Functions
The Gydom Smart Watch GTX20 includes several practical features for daily convenience:
- Music Control
- Calendar
- Camera Control
- Find My Phone
- Weather Forecast
- Games
- Calculator
- Alarm Clock
- Stopwatch/Timer
- Adjustable Brightness
- Raise to Wake
- Screen-On Time settings
- Do Not Disturb Mode

Image: A collage of watch screens showing features like music control, calendar, camera control, find my phone, weather, games, calculator, and wake gesture.
Maintenance
Water Resistance
The Gydom Smart Watch GTX20 is 3ATM waterproof certified, meaning it is resistant to water splashes, rain, and can withstand immersion up to 3 meters for 1.5 hours. It is suitable for activities like swimming and showering. However, it is not recommended for diving or high-pressure water activities.

Image: A person swimming with the Gydom Smart Watch GTX20 on their wrist, demonstrating its 3ATM waterproof capability.

Image: A woman surfing, wearing the smart watch, with text indicating 3ATM waterproof design protects against splashes and short swims, and is waterproof up to 30 meters.
Cleaning and Care
- Regularly clean the watch screen and strap with a soft, damp cloth.
- Avoid using harsh chemicals or abrasive materials, as these can damage the device.
- Ensure the charging contacts are clean and dry before charging to prevent corrosion.
Troubleshooting
If you encounter issues with your Gydom Smart Watch GTX20, please try the following common solutions:
- Watch not turning on: Ensure the watch is fully charged. Connect it to the charging cable and a power source for at least 30 minutes.
- Unable to pair with phone:
- Confirm Bluetooth and GPS are enabled on your smartphone.
- Ensure the VeryFit app is installed and updated to the latest version.
- Restart both your smartphone and the smart watch.
- Try unpairing and re-pairing the device through the VeryFit app.
- 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 for more accurate readings.
- Notifications not appearing:
- Check notification settings within the VeryFit app to ensure desired apps are enabled.
- Verify that your phone's notification settings allow the VeryFit app to display alerts.
- Ensure the watch is connected via Bluetooth to your phone.
For further assistance, please refer to the support section or contact Gydom customer service.
Specifications
| Feature | Detail |
|---|---|
| Model Name | GTX20 |
| Operating System Compatibility | Android 6.0+ and iOS 9.0+ |
| Memory Storage Capacity | 128 MB |
| Battery Capacity | 350 Milliamp Hours |
| Battery Average Life | Up to 14 days (typical use) |
| Connectivity Technology | Bluetooth |
| GPS | Via Smartphone |
| Screen Size | 1.85 Inches |
| Display Type | AMOLED |
| Water Resistance Depth | 30 Meters (3ATM) |
| Color (Current Variant) | Black |
| Item Dimensions | 10.9 x 3.7 x 0.7 inches |
| Manufacturer | Gydom |

Image: Detailed diagram showing the dimensions of the Gydom Smart Watch GTX20 (22mm strap width, 59mm height, 37mm width, 12mm thickness) and strap length (160mm min, 240mm max).
Warranty Information
The Gydom Smart Watch GTX20 comes with a 2-year extended service warranty. This warranty covers both logistic issues and accidental damages. Gydom is committed to providing first-class quality and service.

Image: Graphic detailing "Free Replacement for damages or Logistics issues," "VIP 24/7 Support," and "365-Day Extended Service."
Customer Support
For any questions, concerns, or technical assistance regarding your Gydom Smart Watch GTX20, please contact our customer support team. We offer 24/7 dedicated one-on-one support to ensure your satisfaction.
Please refer to the contact information provided with your product packaging or visit the official Gydom website for support channels.