Technical SpecificationlRated Power 2.3W+2.3W lFrequencies Respond 1５0Hz~20KHzl Drive Unit ４Ω 3Wl S/N Ratio 80dBlInput Sensitivity 500mvProducts Size: 180×32.5×51mm Weighing: 140g (not including batteries) Power Supply4* AAA batteries or DC3-6V 1A