Introduction
The ESTG ZL54CJ Smart Watch is a versatile electronic device designed to enhance your daily life through fitness tracking, health monitoring, and smart notifications. This manual provides comprehensive instructions for setting up, operating, and maintaining your smart watch to ensure optimal performance and longevity.

Figure 1: ESTG ZL54CJ Smart Watch with active display.
Setup Guide
1. Charging the Device
Before initial 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's USB port. The watch display will indicate charging status.
2. Powering On/Off
- Power On: Press and hold the side button for a few seconds until the screen lights up.
- Power Off: From the watch face, swipe down or navigate to the settings menu, then select "Power Off" or "Shutdown". Confirm your selection.
3. Installing the Companion App
To unlock the full potential of your ZL54CJ Smart Watch, download and install the dedicated companion application on your smartphone. Search for the app name (usually indicated in the watch's packaging or quick start guide, or by scanning a QR code on the watch/packaging) in your device's app store (Google Play Store for Android, Apple App Store for iOS).
4. Pairing with Your Smartphone
- Ensure Bluetooth is enabled on your smartphone.
- Open the companion app and follow the on-screen instructions to add a new device.
- The app will search for available devices. Select "ZL54CJ" or a similar identifier from the list.
- Confirm the pairing request on both your watch and smartphone if prompted.
- Once paired, the watch will synchronize time and data with your phone.
Note: The watch uses Bluetooth 5.1 for stable connectivity. Ensure your phone's operating system is iOS or Android OS for compatibility.
Operating Instructions
1. Navigating the Interface
The ZL54CJ Smart Watch features a 1.83-inch TFT touch screen for intuitive navigation. Use the following gestures:
- Swipe Up/Down: Scroll through menus or notifications.
- Swipe Left/Right: Access different widgets or quick settings.
- Tap: Select an item or open an application.
- Press Side Button: Return to the main watch face or wake the screen.
2. Key Functions
Your smart watch offers a wide range of functions:
- Time Display: Digital and analog watch faces available. You can customize watch faces via the companion app.
- Fitness Tracking:
- Passometer: Tracks your steps throughout the day.
- Calorie Tracker: Estimates calories burned based on activity.
- Activity Tracker: Monitors overall daily activity.
- Health Monitoring:
- Heart Rate Monitor: Measures your heart rate.
- Sleep Monitor: Analyzes your sleep patterns.
- Blood Pressure Monitor: Provides blood pressure readings.
- Smart Notifications:
- Message Reminder: Notifies you of incoming messages.
- Call Reminder: Alerts you to incoming calls.
- Answer Call/Dial Call: Allows you to manage calls directly from the watch (requires Bluetooth connection to phone).
- Push Message: Displays notifications from various apps.
- Other Features:
- Alarm Clock: Set alarms directly on the watch or via the app.
- Remote Control: May include camera remote shutter or music control (check app for specific features).
- Week Display: Shows the current day of the week.

Figure 2: ZL54CJ Smart Watch with an analog watch face.
3. Language Settings
The watch supports multiple languages including English, Russian, Spanish, Polish, Portuguese, Italian, French, German, Japanese, Ukrainian, Dutch, and Arabic. You can usually change the language setting through the watch's settings menu or the companion app.
Maintenance
1. Cleaning Your Smart Watch
Regularly clean your watch to maintain hygiene and appearance. Use a soft, lint-free cloth to wipe the screen and casing. For stubborn dirt, slightly dampen the cloth with water. Avoid using harsh chemicals or abrasive materials.
2. Water Resistance
The ZL54CJ Smart Watch is rated as "Life Waterproof". This means it is resistant to splashes, rain, and brief immersion in shallow water (e.g., washing hands). It is NOT suitable for swimming, showering, diving, or high-pressure water activities. Exposure to hot water or steam may damage the device.
3. Band Replacement
The watch band is detachable, allowing for easy cleaning or replacement. Refer to the watch's quick start guide or product page for specific instructions on how to safely remove and attach bands.
4. Battery Care
To prolong battery life, avoid extreme temperatures. Charge the watch regularly, but do not leave it fully discharged for extended periods. The typical battery life is up to 2 days, depending on usage.
Troubleshooting
Common Issues and Solutions:
- Watch not turning on: Ensure the watch is fully charged. Connect it to the charger for at least 30 minutes.
- Cannot pair with phone:
- Make sure Bluetooth is enabled on your phone and the watch.
- Ensure the companion app is open and searching for devices.
- Restart both the watch and your phone.
- Check if the watch is already paired with another device.
- Notifications not appearing:
- Verify that notifications are enabled in both the watch's settings and the companion app.
- Check your phone's app permissions to ensure the companion app can access notifications.
- Ensure the watch is connected via Bluetooth to your phone.
- Inaccurate health data:
- Ensure the watch is worn snugly on your wrist, but not too tight.
- Clean the sensors on the back of the watch.
- Environmental factors and movement can affect readings.
- Short battery life:
- Reduce screen brightness.
- Limit frequent heart rate monitoring or other intensive features.
- Ensure no background apps are excessively draining power.
If you encounter persistent issues, consult the companion app's help section or contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model | ZL54CJ |
| Brand Name | ESTG |
| CPU Model | 8763EWE |
| Screen Material | TFT |
| Display Size | 1.83 inch |
| Resolution | 240*284 |
| Bluetooth Version | 5.1 |
| Battery Capacity | 220-300 mAh |
| Battery Life | Up to 2 days |
| Waterproof Grade | Life Waterproof |
| System Compatibility | iOS, Android OS |
| RAM | <128MB |
| ROM | <128MB |
| Case Material | Alloy |
| Band Material | Silica Gel |
| Origin | Mainland China |
| Certification | CE |
| Voice Assistant | No |
| GPS | No |
| SIM Card | No |
| Wi-Fi | No |
User Tips
- Optimize Battery Life: To maximize the 2-day battery life, consider reducing screen brightness, setting a shorter screen timeout, and disabling continuous heart rate monitoring if not needed.
- Accurate Readings: For the most accurate heart rate and blood pressure measurements, ensure the watch is worn snugly on your wrist, about one finger's width above the wrist bone. Remain still during measurements.
- Explore Watch Faces: The watch supports multiple dials. Explore the companion app to find and customize watch faces that suit your style and provide the information you need at a glance.
- Stay Connected: Keep your watch within Bluetooth range of your paired smartphone to receive all notifications and utilize call functions seamlessly.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.
This product is certified with CE, indicating compliance with health, safety, and environmental protection standards for products sold within the European Economic Area (EEA).



