Bluetooth v1.2 Stereo Headset with Mic Bluetooth Stereo Headset with Microphone (Cyber-Blue (Shenzhen) Technology Co., LTD) General Features: Comfortable shape Bluetooth v1.2 compliant Profile Supported: A2DP (Advanced Audio Distribution Profile), AVRCP, Headset Profile, Hands-free pr Frequency Response: 20 Hz ~ 20 KHz Sample Rate: 48 KHz, 16 bit SPL (Sound Pressure Level): 105 dB @ 1 KHz