Driver Type : Dynamic
Driver Size : 50 mm
Impedance : 32?
Sensitivity (dB) : 108dB±3DB
Frequency Response : 20Hz-20KHz
Battery Capacity (mAh) : 400 mAh
Playback Time : 20 hours
Charging Time : 3 hours
Standby Time : 180 hours
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We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 30 days of delivery.