Latest Bluetooth 4.1 Technology Built-in HD Microphone with CVC6.0 noise cancellationUp to 5 hours of continuous talking / music time and up to 150 hours of standby with a single chargeLight Weight and Ergonomic Design Bluetooth HeadphonesEasy to use and Connect to Multiple PhonesPackage include＃1 x bluetooth headphone＃1 x Micro USB Charging Cable＃2 x Earbud tips＃1 x User Manual