Dunherm speaker

Dunherm 2.1 Home Theatre Speaker,Output power Short Description Dunherm 2.1 Home Theatre Speaker,Output power: 25W+10W*2,Speaker unit: 4"+3" x 2,USB/SD/FM,Black Retail Box 1 year Limited Warranty   Long Description Dunherm 2.1 Home Theatre Speaker,Output power: 25W+10W*2,Speaker unit: 4"+3" x 2,USB/SD/FM, Black Retail Box 1 year Limited Warranty   Specifications RMS                       - 25W+10WX2 Driver                    - 4" + 3" x 2 Impedance         - 4ΩBass/4ΩSatellite S/N Ratio             - 65dB Function      USB/SD Card Reader Slot LINE signal auto switch Frequency Response     - 30Hz-20kHz Input Impedance             - 47k Ohm Power                   - 230V/50HZ Magnetically Shielded    - yes