Description A SMART AUDIO CHIP IS USED TO CREATE A STEREO HIFI SOUND FIELD AND A 360-DEGREE SURROUND SOUND EFFECT. Product Model: RB-M55 Wireless Version: V4..2 Transmission Distance: <10M Frequency Response: 100Hz-20kHz Impedance: 4 Rated Power: 7W*2 Driver Unit: Battery Capacity: 3600mAh Input: DC5V=1A Play Time: 3H Standby Time: 25H Charging Time: 4H Product Size: 283*123*126mm








