Material: ABS;Size: 10*5.2*3cm;Weight0.065kg;Bluetooth version :5.0;Frequency response: 20Hz-20KHz;Impedance: 32 Ohm;Headphone sensitivity: 85dB/3db;Horn diameter: 8mm;Charging voltage: 5V;Charging box charging time: 3H;Model name: F8 TWS;Headphone distortion: 1K/5%;Functions:Noise cancellation, Double WheatENC,long battery life;Transmission distance: 10 m;Running time: 7-8 hours;Charging time: 1 hour ;Standby time: 6 days;Headset battery capacity: 50 mAh;Charging compartment battery capacity: 400 mAh;Waterproof performance:IPX5;Ergonomic design and waterproof material: special hook for Bluetooth sports headphones fits your ears. The comfortable ergonomic 120 degree in-ear design conforms to the contours of your ears comfortably and securely.Stereo sound quality and CVC 8.0 noise cancellation: The wireless headphones have 8mm high-efficiency drivers and composite polymer diaphragm, which provides excellent stereo sound.Bluetooth 5.0 and Automatic Pairing: The sports headphones use the Bluetooth 5.0 chip to ensure a fast and stable connection, so you can enjoy your favorite music and videos at any time.With the help of control buttons, wireless headphones can freely change songs, answer and reject calls, adjust volume and activate Siri, which is very convenient.