G&BL MCM2590. Type: PC, Microphone sensitivity: -54 dB, Microphone frequency: 20 - 16000 Hz. Connectivity technology: Wired, Connector(s): 3.5mm, Cable length: 2.5 m. Current consumption: 0.5 mA, Operating voltage: 4.5 V. Colour of product: Black. Line-out Signal-to-Noise Ratio (SNR): 40 dB