Artes SPU-120. System type: 2.0 system, Recommended usage: PC, Speaker placement: Portable. RMS rated power: 6 W, Frequency range: 100 - 18000 Hz, Signal-to-Noise Ratio (SNR): 80 dB. Connectivity technology: Wired, Speaker interface type: USB, Headphone connectivity: 3.5 mm. Power source type: USB, Number of loudspeakers: 2 pcs