Commodity Description Bluetooth version: V5.0 Support protocols: A2DP; AVRCP; HFP; HSP. Signal distance: 10m Channel: Stereo Continuous playback/conversation time: about 5 hours. Standby time (standby with mobile phone): about 120 hours. Sound quality: high-definition sound quality of high-fidelity mobile phone ringtones. Binaural conversation: support Headphone capacity: 3.7 V/60 mAh Battery capacity; 3500mah Charging port: Micro USB charging cable Waterproof grade: ipx 5 Noise reduction grade: CVC8.O Signal noise: &gt; 75dB Gross weight: 120g Net weight: 86g Distortion: &lt; 1% Input voltage: DC5V Working voltage: 3.7V(3.3-4.2V) Charging time: less than 2 H English voice conversion: the left/right headphones display Chinese voice; and double-click the corresponding headphones to convert again. Function: press the touch key to answer the call and press the hang up button when talking. Call Rejection: When talking; press and hold the touch button for 1.5 seconds; then turn it off and listen. Pause/Play: Press the touch button to change the play/pause during playing. Next Song: Double-click the previous song on the touch button during playback. Start the voice assistant (Siri): press and hold the touch button for 1.5 seconds while waiting for release to start the voice assistant (mobile phone support is required). Gross weight: 122g Packing size: 14.5*8*4cm Packing list: 2 * Headphones 1 * Charging bin 1 * USB cable 4 * Earcap 1 * English instruction manual

TWS Bluetooth Headset 5.0 True Wireless Dual-band Digital Display Sports Waterproof S11 Bluetooth Headset