Trust Flexible Microphone MC-2200, 20 - 17000 Hz, 2200 Ω, Sound card with microphone input (Active) Speaker set, 5.59 x 13.6 x 0.0394" (142 x 345 x 1 mm), 6.7 oz (190 g), 3.5mm Trust Flexible Microphone MC-2200. Microphone frequency: 20 - 17000 Hz, Microphone input impedance: 2200 Ω. Minimum system requirements: Sound card with microphone input (Active) Speaker set. Dimensions (WxDxH): 5.59 x 13.6 x 0.0394" (142 x 345 x 1 mm), Weight: 6.7 oz (190 g), Connector(s): 3.5mm