portable mini bluetooth speaker 1,high quality sound 2,hands free 3,echo and noise reduction Model No.: BSK02portable mini ... FEATURES*Best sound quality wireless speaker and speakerphone,*Support Bluetooth hands-free,* Noise signal ratio: 95dB, high quality sound.* 6th ... Bluetooth® Profile Supported: HSP V1.2, HFP V1.5, A2DP V1.2 ,* RF Frequency Range:2.402-2.480GHZ, 2.4G ISM band,* Radio Performance ...