... Bluetooth Headset Dual-Mic &Noise Filtering + StereoMain Featureso Dual-Mic & Noise Filtering, more clear sound o For Mono-Stereo ... Earpiece, more popular and comfortable o BLUETOOTH V2.1, higher version, higher tech. o MICRO USB Universal Charging, ... V2.1 + EDRBluetooth Profiles Supported: 20: Headset, Handsfree, A2DP, AVRCP 20T: Headset, Handsfree, Multi-pointTransmission Power: Class 2Operation ...