Nia q8-851s bluetooth wirless headphone (hot sale)

Specification sound mode stereo upto 32gb microsd card supported speaker customized 40mm nd driver unit impedance 32 ohm sensitivity 108 3db frequency response 20 2000hz input power 3 7vdc 280mah built in rechargeable li ion battery dc5v 500ma micro usb charging operating time 5 6 hours charging time approx 2 hour bluetooth version 4 0 transmission frequency 2402 mhz to 2480 mhz communication range 10m max standby time approx 48 hours profiles a2dp avrcp hsp hfp package includes 1 x bluetooth headset 1 x micro usb charge cable 1 x operation manual weight 0 50 kgs