Trust SoundForce 2.1 Pro, 2.1 channels, 24 W, Black, 1-way, 6.5 cm, 8.8 cm Trust SoundForce 2.1 Pro. Audio output channels: 2.1 channels, RMS rated power: 24 W, Product colour: Black. Satellite speaker type: 1-way, Speaker width: 6.5 cm, Speaker depth: 8.8 cm. Subwoofer width: 13 cm, Subwoofer depth: 17.4 cm, Subwoofer height: 22.1 cm. Power source: AC