[ipx5 waterproof] Not afraid of sweat and water [Light weight]Only 27g earphone,just wearing comfortable! [ABS material]The body material of the earphone is made of ABS, which is not easy to deform, lighter and stronger [Bone Conduction Technology ]Allowing ears to be opened to surrounding sound, suitable for running, cycling, gym, and office work, more safety while doing sport outdoors.No need to wear in the ear, more comfortable. [Latest Bluetooth V5.0]Fast and stable connection to your device, 33ft signal in no barrier space. "0" delay, suitable for calls/games/sports [Comfortable and Stable Wearing]Ergonomic and anti-drop design, titanium headband is and flexible, great for durability and portability. Comfortable wearing and do sport freely without worry about falling down. Product parameter weight:27g Transmission range: 10 meters Bluetooth protocol: 5.0 Channel: stereo Capacity of earphone:230mAh charging time: about 2h stand-by time:220h Music time :5-6h Speaker power: 0.5W Support protocol: A2DP v1.3/AVRCP v1.6/HFP v1.7/HID v1.1/AVCTP v1.4/AVDTP v1.3/SPP v1.2 Colour:black Material:ABS Package Contents: 1 * sports bluetooth headset Only the above package content, other products are not included. Note: Light 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.