1)Mini Mono Bluetooth Headset 2)Bluetooth V2.1 3)Beautiful,Stylish design 4)Small, light weight Mini Mono Bluetooth Headset ISSC chipsetTechnology ParameterTechnical standards: Bluetooth version V2.1Transmission ... time: 4 hoursStandby time: 100 hoursBluetooth headset features:1)beautiful, stylish design2)support all Bluetooth devices3)clear voice4)less interference, confidentiality, and ...