ws sports earbuds bluetooth earphones wireless music headset waterproof b9 bone conduction earpieces

style : ear hook certification : ce vocalism principle : dynamic origin : cn(origin) control button : yes active noise-cancellation : yes communication : true wireless volume control : no sensitivity : 260db wireless type : bluetooth max output : 300mw support app : no function : for internet bar function : monitor headphone function : for video game function : common headphone function : for mobile phone function : hifi headphone function : sport number of drivers : 2 plug type : none package list : user manual package list : charging cable impedance range : from 33 to 100 connectors : usb model number : b9 earcups type : sealed