Artes SPU-190. System type: single speaker, Recommended usage: PC, Speaker placement: Portable, Tabletop/bookshelf. RMS rated power: 6 W, Frequency range: 100 - 20000 Hz, Signal-to-Noise Ratio (SNR): 70 dB. Connectivity technology: Wired, Speaker interface type: USB. Battery technology: Lithium-Ion (Li-Ion). Power source type: Battery