Sony High-quality Compact Microphone ECM-S80. Microphone sensitivity: -44.5 dB, Microphone frequency: 100 - 10000 Hz, Microphone operation mode: Stereo. Connectivity technology: Wired, Cable type: 2-core shielded, Connector(s): Gold-plated L-shaped mini. Battery type: LR44, Power supply type: AC/Battery, Battery life (max): 80 h. Dimensions (WxDxH): 86 x 11 x 54 mm, Weight: 39 g