Features1 Model M22 4 1 bluetooth is fully compatible to bring you a portable wireless connection experience3 Innovative magnetic design Headphones with magnetic design on the back not just fun not just portable4 Noise reduction Restore the original sound Patented physical impulse noise reduction system balanced external acoustic wave impact stereo sound5 Fast connection speed intelligent computing low power consumption and other feature6 60mHA Large Capacity battery 3 5 hours of continuous playback super standby 110 hours7 Function adjust the volume switch songs call answering call reject caller ID hang up the phone bluetooth hands free calls phone replay voice prompts bluetooth back battery display smart shutdown Specifications1 Material Metal2 Color Black Rose Gold3 Cable length 65cm4 bluetooth version bluetooth 4 15 Transmission distance 10M6 Working time 3 5 hours7 Charging time 1 2h8 Standby time 110 hours9 Battery 60mAh10 Sensitivity 983db11 Impedance 3212 Frequency response range 20 20KHzPackage Included1 x Magnetic bluetooth Headphones1 x Micro USB Charging cable1 x Plastic grip1 x Manual