Specifications BrandKALOADBluetooth compatible ProtocolV5 0Product Volume22 cm x 6 5 cmSingle or Double EarBilateral StereoBuilt in BatteryYesBattery Life6 HoursWeight70 gFeatures Features 1 5 0 Bluetooth Protocol available for most of devices with Bluetooth function 2 Music hat with double earphone3 Knitted material fashion and keep warm with answer the phone in winter 4 Set in MIC available for cell phone to transmit the speaking phone to your audio devices directly so that the user can hand free answering phone up via the device 5 Set in Li ion chargeable battery charge via USB Cable long stand by time Package includes 1 x Headband