Kingear Jabees W508 Bluetooth Wireless Sports Stereo Waterproof Headsets Headphone Earphone-Red 1,Waterproof sweat proof feature with 20 meter wireless range. 2,Standby time: Last 150 hours. 3,Tight attached to your ear, convenient and cool gadget. 4.Please pay attention, do not diving with this headphone, for the Bluetooth may lose signall