DescriptionThis air conduction wireless headset is made of premium material, which can withstand long-lasting use. Features the ABS material, which has high durability, not easy to deform. Fine workmanship, ensures practicality.Features-Color: Black-Material: ABS -Size: 12.50X10.50X5.50cm/ 4.91X4.13X2.16in Charging time: 1.5 hours Standby time: 120 hours Playing time: 5 hours Battery information: 120mAh Frequency response range: 20HZ-20KHZ Connection range: 10-15 meters Maximum charging voltage: 5V Wireless version: 5.0 - 6D rich sound quality: the speaker adopts physical ecological diaphragm technology, directional surround sound field and has a unique directional design. - Open design, not plugging or clamping your ear, better at ear protection. - Lightweight design, only 18 grams, just like wearing nothing while putting it on. - Small body, long battery life: 120 hours standby time and 5 hours continuous use. - Adopt wireless 5.0 high performance chip, enhanced calling, compatibility and function, lower power consumption and longer working time.