Magnetic Bluetooth headset $ 16.48 Transmission range: 10 meters Function: call function, support music, multi-point connection Bluetooth protocol: 4.0 Channel: stereo Usage: neck hanging Single or dual ear: bilateral stereo Standby time: 160 hours Talk time: up to 58 hours Music playback time: about 4-6 hours Charging time: about 2 hours Microphone sensitivity: -41+ 1DB Frequency response: 20- 20000HZ Output sensitivity: 923DB Impedance: 16+ 10% Rated input power: 10MW Distortion: 1% Cable length: 75MM
