Bluetooth Version:BK3.0. Frenquency:2.402-2.480GHz. MAX Power output:3W MIC Sensitivity:-32db . Receive Sensitivity:Better than +82dBm. Range:10meters Data Transmission:Up to 3Mbps UART Data Transmission Rate:115200bps . Charing Voltage :4.8V –5.2V DC. Working Voltage:3.7V –4.2V DC. Working Current:200MA. Quiescent Current:>1UA. Battery :600MAH. Antenna:Built in