ENC noise reduction technology for clear voice quality,It uses bone conduction ENC noise reduction technology, which intelligently reduces external noise such as surrounding voices and wind when you are on a call. When you are running or in various noisy environments, the call quality is not affected at all. This is not available in most other products. Ultra-low sound leakage technology can withstand centimeter prying,The directional sound emission and anti-sound leakage technology are used to ensure user privacy. Ear-hook design will not fall off even during strenuous exercise,Sports enthusiasts can't get rid of it, no fear of high-intensity exercise. Equipped with sports non-slip silicone ear hooks, stable to wear 5.2 Bluetooth technology and core chip,Once paired, it is impossible to disconnect. 8 hours long battery life,The independent algorithm and low-energy oscillator sound unit provide 8 hours of ultra-long battery life. Speaker type:bone conduction speaker Battery life:10H Bluetooth version:Bluetooth v5.2 battery capacity:0.53Wh-140mAh Charging time:Less than 1H Bluetooth decoding format:SBC Standby time:10 days Charging voltage:5V5% Bluetooth connection distance:10 meters Colour: As Shown Material: ABS Package Contents: 1 x bone conduction hearing aids Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.