Wireless 4.1 Bluetooth IPX5 waterproof sport stereo headphones Headset with microphonewaterproof Bluetooth headphones Feature:1.With CSR bluetooth chipset, hifi stereo sound effect.2 ... timeAbout 2 hoursStandby timeAbout 100 hoursCharging portMicro USB typeColorsWhite/blackfunctionMicrophone, bluetooth, waterproof, NFC, voice promptStandard configurationCharging cable, earbuds, waterproof case, ...