ALD66 --Sun visor bluetooth handsfree car kit 1.Bluetooth Specification v2.1+EDR class 2 2. Sun Visor Clip Design 3.Supports Bluetooth Headset and Hands-free Profile(HFP 1.5) 4.Multipoint support, can connect to two cell phones at the same time 5.Full Duplex Sound Quality 6.The latest CVC echo/noise reduction for reducing background noise. 7 One-touch answer, call rejection, last number redial, adjustable volume8. Voice dialing function (Voice activation subject to voice activation enabled phones 9. RF Frequency Range: 2.402-2.480GHZ, 2.4G ISM band 10.Rechargeable 600mAh Li-Polymer Battery 11.Mini 5 Pin USB Plug charging Port 12.Charger adapter Output: DC 5V&500mA 13.Nominal charging time: Max 2 hours 14.Talk time: Up to 6 hours15.Standby time: Up to 600 hours