Bluetooth: V3.0+EDR Frequency: 2.4026GHz-2.480GHz Transmission distance: 10M Transmission distance of MIC: ≤1 M Li-ion Battery: 3.7V/120mA Charging time: 2.0 hours Standby time: Up to 60 hours Continuous working time: about 5 hours

• V3.0+EDR Bluetooth version, available for most of devices with Bluetooth function.
• Knitted material ,fashion and keep warm with answer the phone in winter.
• 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.
• Set-in Li-ion chargeable battery, charge via USB Cable, long stand-by time

V3.0+EDR Bluetooth version, available for most of devices with Bluetooth function.King Hong