1. Bluetooth 5.3 Chipset 2. Bluetooth Connection Supports Automatic Time Calibration, Can Be Used as an Electronic Watch 3. Sweatproof Design, Stylish and Comfortable to Wear 4. Built-in High-Definition Speaker, Supports Card Insertion or Wireless Bluetooth Playback 5. Supports MP3 Player Functionality 6. Charging Time: Approximately 1 Hour 7. Battery Capacity: 200mAh 8. Speaker Unit: 20mm
