DOLF DL-05 Wireless Sports Neckband

WIRELESS VERSION:5.3 PRODUCT MATERIAL:ABS SPEAKER DIAPHRAGM:PET CALL SENSITIVITY:42db/+3db HEADPHONE DISTORTION:1K /5% HEADPHONE BATTERY CAPACITY:200 CALL TIME:8 hours PLAY MUSIC:10 hours MAGNET TYPE:NdFeB N40 FREQUENCY RANGE:20Hz-20KHz SPEAKER IMPEDANCE:320 CHARGING VOLTAGE:5V CONNECTION DISTANCE:10M SUPPORTING AGREEMENT:HFP:HSP.A2DPAVRCPOPP.PBAP