*Function: music play and hands-free call *Bluetooth Version: 5.0 *AUX interface with MIC+Button(for control volume and play) *3.5mm metal plug is detachable
*Bluetooth Protocol: AVRCP/A2DP/HFP/HSP *Support SBC/AAC *Do not support APTX
*Frequency range:2.402GHz-2.480GHz *Frequency Response: 20Hz-20kHz *Output Power: 28mW, RL=16Ω *SNR(Signal to Noise Ratio):＞90dB *Sensitivity: -38dB *Transmission distance: up to 10m *THD ( total harmonic distortion )：<0.1% *Battery capacity: 3.7V/180mAh *Operating Time: up to 9hours *Micro USB for power supply(5V) *Porducts Size:L55xW26xH12(mm)