Bluetooth hat for music and hands-free talk
V3.0+EDR Bluetooth version, available for most of the devices with Bluetooth function.
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 standby time.
Support display receiver battery on iPhone.