Trust Portable Microphone MC-1100p. Microphone sensitivity: 54 dB, Microphone frequency: 80 - 16000 Hz, Microphone input impedance: 2200 Ом. Connectivity technology: Wired, Connector(s): 3.5mm, Cable length: 1.8 m. Dimensions (WxDxH): 35 x 23 x 46 mm