.Output power: 2.5Wx2 (RMS) .Speaker unit: 42mmx2 .S/N: >82dB .Frequency range: 70Hz~20KHz .Dimensions(LxWxH)mm: 93x95x135 .Power supply: a) USB Plug b) DC 6.0V (R6x4 batteries) c) DC adapter: output 6V .Packing:8SETS/CTN .Carton size:682x204x217mm .N.W./G.W.:7.85KGS/9.45KGS .Qty/20 FCL:7418SETS .Qty/40 FCL:15162SETS . Min Order Quantity: 2000sets