Edifier M1250

Total power output:RMS 0.6W x 2
THD + N (testing level): 10% 
Signal to noise ratio: ≥85dBA 
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)