Micro Innovations AcoustiX. System type: 2.0 system, Recommended usage: universal, Speaker placement: Tabletop/bookshelf. RMS rated power: 3 W, Frequency range: 200 - 15000 Hz, Impedance: 10 Ом. Connectivity technology: Wired, Speaker interface type: 3.5 mm. Housing material: Plastic. Audio output channels: 2.0, Power source type: USB