Frisby FS-45NU. System type: 2.0 system, Recommended usage: PC, Speaker placement: Portable. RMS rated power: 4 W, Frequency range: 60 - 20000 Hz. Connectivity technology: Wired, Speaker interface type: USB, Headphone connectivity: 3.5 mm. Housing material: Plastic. Width: 60 mm, Depth: 80 mm, Height: 183 mm