USB speaker TF card

mini speaker support USB drive, TF card and FM radio; Stereo sound

 Power(speaker):                   2pcs x 3W max   Signal To Noise Ratio:              >80dB Frequency Response:                 20Hz-20kHz Distortion:                         <10% Battery Li-ion:                     3.7v, 900mAh Battery Capacity:                   900mAh Battery Charging Voltage:           5V Charger Time:                       3 hours max Last Time:                         5hours (via audio cable to play) Driver Unit:                        50mm, 4 Ohm , Power: 3W Dimension:                          80x80x74mm Power Indicator Light:              Blue lights Work Frequency:                     2.402-2.480GHz Accessories:                        User Manual, Standard Audio Cable,USB Charge Cable  

 paper gift boxbox size: 10.8x10.8x11cm40pcs in one cartoncarton size: 56x45x25.5cm weight: 13.5kgs/carton