Dimension:19.5*6.3*6.6cm   （Open dim) 10*6.3*6.6       (Fold-able dim)

Power Supply:BATTERY(AAA 1.5V*4),DC 5V(USB CABLE FOR PC),OR AC  POWER ADAPTOR CORD(OUTPUT 6V,300-800mA)
SPEAKER UNIT:52mmx2W*2(4Ohms)
OUTPUT POWER:2W*2(1KHz 10% THD)
EREQUENCY RESPONSE:150Hz-18KHz