Trust 5.1 Surround Speaker Set SP-6600A UK, 5.1 channels, 43 W, 25 W, 18 W, 8.27 x 10.9 x 7.28" (210 x 277 x 185 mm), Wired Trust 5.1 Surround Speaker Set SP-6600A UK. Audio output channels: 5.1 channels, RMS rated power: 43 W. Satellite speakers RMS power: 25 W. Subwoofer RMS power: 18 W, Subwoofer dimensions (WxHxD): 8.27 x 10.9 x 7.28" (210 x 277 x 185 mm). Connectivity technology: Wired