... : HSP V1.2, HFP V1.5, A2DP V1.2 ,* RF Frequency Range:2.402-2.480GHZ, 2.4G ISM band,* Radio ... : enables connection to 2 A2DP source devices for music playback,AUDIO:* Frequency Response:20 Hz - 20 KHz, Very high Signal to Noise ... Ratio(SNR ):95 Db, TotalHarmonic Distortion(THD):0.1%,* Frequency Response:60 Hz - 20 kHz* 2W Speaker Output Level:80dB ...