Wireless Microphone System KWS-899 (Missing Sub-unit)

This is an analog wireless microphone system with virtually no delay.
It is recommended for seminars and lectures, as well as for VTuber live streams.

I purchased this for repair parts for the receiver unit and for a two-into-one setup, so only the receiver unit is missing. The transmitter unit, AC adapter, and phone cable are unused and unopened.
(Please check the photos for included items.)

This is for those who have spare receiver units. Please consider purchasing only if you understand this.