AGPtek Hands-Free Bluetooth V2.1 Stereo Headset Flexible Boom Mic Noise-Canceling Chipset:CSR BC5 V2.1 Support:AVRCP,Headset,Headsfree,Noise-Canceling,Voice-Dial/Mute Broadcast Range: 10M Talking Time:12 hours Stand-by time:250 hours