NEC SP-4046PV. System type: 2.0 system, Recommended usage: speaker set unit, Speaker placement: Tabletop/bookshelf, Wall-mountable. RMS rated power: 30 W, Frequency range: 100 - 25000 Hz, Impedance: 8 Ом. Connectivity technology: Wired. Width: 70 mm, Depth: 59 mm, Height: 532.2 mm. Power source type: AC