USB powered, compact 2.0 multimedia speakers Flat panel designed satellites Magnetically shielded speakers Built in power and volume controls 3.5mm auxiliary input and headphone jackTotal power output: RMS 0.6W x 2 THD + N (testing level): 10% Signal to noise ratio: 80dBA Frequency response: 150Hz - 20KHz Input sensitivity: 250mV ± 50mV Input impedance: 10KΩ Audio Input Type: 3.5mm stereo line-in, USB, PC sound card, headphone jack Adjustment: Volume control Speaker unit: 50mm x 90mm, magnetically shielded, 4Ω Control panel: Power, Master Volume control Dimensions: Active speaker: 68mm x 166mm x 94mm Passive speaker: 68mm x 166mm x 94mm (WxHxD) Weight: 0.55Kg (gross)