Stereo Bluetooth headset,bluetooth earphone,bluetooth headphone ·Hardware version: Rev.R03·Bluetooth specification: Bluetooth 1.2 compliant·Supported profile: A2DP, AVRCP, headset, ... frequency shift keying)·Interoperability: all devices support the Bluetooth A2DP, AVRCP and HS/HF profiles·Security: pairing ... : 0.1%·Quality: 44.1, 48kHz 16bit stereo CD quality·Sensitivity: 96dB·Frequency response: 20Hz ...