Russound OB-5.1 Indoor/Outdoor Speaker. Frequency range: 65 - 20000 Hz, Impedance: 8 Ом, Sensitivity: 89 dB. Colour of product: White. Weight: 2.3 g. Type: Portable speakers, Dimensions (WxDxH): 184 x 165 x 244 mm, Audio output channels: 2.0