5.1 channel speaker system Model: SP-525 (Black or Silver) - RMS: Woofer - 40W, Satellite - 5W x 5 - P.M.P.O: 4000W - Speaker Unit: Woofer -5"x 1 Satellite- 3" x 5, - Controls : ON/OFF, Center Vol, Bass Vol, Front Vol, Master Vol, LED, Virtual Sound -Dimension (mm): Woofer - 320(W) X 151(D) X 332(H) Satellite- 85(W) X 88(D) X 161(H) - Compatible with Personal, Micro Computer and Sound Card MINI- COMPO, CD PLAYER, DVD PLAYER, WALK-MAN, TV, AUDIO