POWER SUPPLY:BATTERY(AAA 1.5V*4),DC 6V(USB CABLE FOR PC),OR AC  POWER ADAPTOR CORD(OUTPUT 6V,300-800mA)
SPEAKER UNIT:40mmx2W*2(4Ohms)
OUTPUT POWER:2W*2(1KHz 10% THD)
FREQUENCY RESPONSE:150Hz-18KHz

186*45*50(mm)   gift box

50*44*34  CM/40PCS   9/10KG