Using CSR8635 Bluetooth chip,Bluetooth V4.0,high software compatibility.Product Parameters:Model:XH-M548Chip Type:TPA3116D2Bluetooth module:btm835/csr8635(4.0)Transmission distance:Max 10mVoltage:DC12-24VCurrent:ˇ3AOutput Power:125Wx2Efficiency ratio:ˇ90%Sound track:Dual trackSize:98*79*16mmBluetooth module Parameters:Specification:Bluetooth V4.0Modulation Mode:GFSK /4 DQPSK,8DPSKVoltage:3.3-4.2VSuppotr Bluetooth Protocol:HFP V1.6,HSP V1.2,A2DP V1.2,AVRCP V1.4,DI V1.3Work Current:≒30mAStandby...