Logitech Speaker System Z313. Audio output channels: 2.1 channels, RMS rated power: 25 W, Recommended usage: PC. Amplification device form factor: Stand-alone, Amplifier/receiver input interface type: 3.5 mm jack. Satellite speaker type: 2-way, Satellite speakers RMS power: 10 W, Satellite speaker frequency range: 48 - 20000 Hz. Subwoofer type: Active subwoofer, Subwoofer RMS power: 15 W, Subwoofer dimensions (W x D x H): 220 x 150 x 228 mm. Power source: AC