Features: 1. Comfortable to Wear: No in-ear design required, multi-point support, even when you do strenuous exercise, you do not have to worry about it will shift and fall off. 2. No Sound Leakage: Fully sealed directional vibrator design, whether it is music or calls, sealed silencing treatment to protect privacy and avoid embarrassing sound leakage. 3. Bluetooth-compatible 5.3 Clip: Hardware Bluetooth-compatible 5.3 technology. Provide zero radiation Bluetooth-compatible RF, and 5mA low power output, safe and healthy and double the battery life. 4. IPX5 Level Waterproof: The multi-process strict design provides a full range of splash and waterproof protection for the earphones, even running fitness is not afraid of rain and sweat. 5. After-service: If you have any questions after receiving the product, please feel free to contact us and we will provide you with a satisfactory answer. Specification: Bluetooth-compatible Version: 5.3 Transmission Distance: 10m Battery Capacity: 300mAh Listening Time: 88h Talk Time: 108h Standby Time: 365days