... Headset,Hands-stereo 3. Talking time:3-4H 4. Standby time: >100H Specifications:1. Version: Bluetooth V3.0+EDR2. Support:A2DP,Headset ... :1. Can connect with two devices with bluetooth function simultaneously.2. With receive/hang up/reject ... a call,voice dialing,tail number redial functions,use advanced digital signal processing(DSP) technology. Bluetooth Stereo Headset ...