1-R.M.S: 2x2.5w 2-Driver units: 1.25?x 2 3-S/N: ≥70dB 4-Impedance: 4Ω 5-Input: 3.5mm Stereo mini jack 6-Input Impedance: TBA 7-Frequency Response: 120Hz - 18KHz 8-Channel Separation: 45db 9- Current Consumption: 180mA 10-Power: ?AAA? alkaline batteries x4 AC power adaptor cord (output 6v,300-801mA) Origin China Minimum order 1000