43dB。 Sony has long-distance receiving fidelity sound quality, long battery life, small size and portability. The power supply mode of the interview microphone is 1.5V battery and USB power supply, and the interface is USB and 3.5 interface, and the signal transmission is wireless, with a sensitivity of 43dB. Sony is a world-renowned large-scale comprehensive multinational enterprise group in Japan, headquartered in the port area of Tokyo, Japan. Sony is a world leader in audio-visual, electronic games, communication products and information technology.