Sony Single-Channel Wireless Microphone ECM-W3S

The ECM-W3s comprises a microphone-transmitter featuring high signal-to-noise (S/N) ratio microphone units, and a single-channel receiver. The transmitter and receiver process audio digitally and transmit it wirelessly, allowing the capture and recording of one speakers’ voices with superb clarity and low noise.
Single-channel wireless microphone for high-quality digital recording
Communication is possible at up to 492 ft (150 m)
High signal-to-noise ratio (S/N) microphone units
Noise-suppressing filter functions
Multi Interface (MI) Shoe compatible