Sony ECM-W3 Wireless Microphone - ECMW3
Dual-channel wireless microphone for high-quality digital recording
The ECM-W3 comprises two microphone-transmitters featuring high signal-to-noise (S/N) ratio microphone units, and a dual-channel receiver. The transmitters and receiver process audio digitally and transmit it wirelessly, allowing the capture and recording of two speakers’ voices with superb clarity and low noise.

Or as low as $110.55/month over 6 months.