Total 100 wattage. Subwoofer 40 watts. 1 centre speaker, 20 watts. 2 satellite speaker, 20 watts each. Active amp. Power consumption in standby n/a. Power consumption in use 105W. Remote control requires 2 x AAA batteries, included. Size of subwoofer (H)31, (W)19, (D)31cm. Size of centre speaker (H)6.8, (W)31, (D)6.4cm. Size of satellite speaker (H)85.5, (W)21.5, (D)21.5cm.