With 4G SIM Card Smart Watch for Child 4G Smartwatch with WiFi, GPS Tracker, Voice Chat, Video Call, and Monitor Function for Boys and Kids Features: 1. Accurate Location Uses LBS base station location technology for accurate positioning. 2. Safe Incoming Calls After setting SOS and family numbers, contacts, and phone numbers in the app, children can only receive calls from approved numbers. No calls from strangers allowed. Children can press the SOS button or a preset contact number to call you directly. 3. Walkie Talkie Enables voice conversation between the smartwatch and the paired app. Send voice messages from the app to the watch or record and send messages from the watch to the app. 4. Reward System Select the number of hearts on the app and confirm to send a reward notification to the watch. View related data and activity details through the app. 5. History Route Check your child's historical movement routes by selecting a specific time period in the app. 7. Find the Watch If the watch is misplaced, send a command from the app to make the watch ring for one minute, helping you locate it easily. Press any button on the watch to stop the ringing. 8. Message Alerts a. Low battery reminder b. SOS alert 9. Remote Shutdown Remotely power off the smartwatch using the mobile app. 11. Quick Learning Kids can enjoy sample math games directly on the watch to support learning through play. 12. Flashlight Built-in LED flashlight for convenience in low-light situations. Specifications: Frequency: GSM 850/900/1800/1900 MHz Memory: 32MB RAM, 32MB ROM Compatible Systems: iOS, Android Screen Size: 1.44 inches Waterproof Rating: IP67 Wireless Range: Unlimited (dependent on network) Operation Method: Touch screen and physical buttons Tracking Technology: LBS Base Station Tracking GPS Positioning Accuracy: 50200 meters Speed Accuracy: 0.1 m/s