Konig CMP-SPUSB50BU. System type: 2.0 system, Recommended usage: PC, Speaker placement: Portable. RMS rated power: 4 W, Frequency range: 60 - 20000 Hz, Impedance: 8 Ом. Connectivity technology: Wired, Speaker interface type: 3.5 mm, Headphone connectivity: 3.5 mm. Type: Portable speakers, Power source type: USB