Have never tested there are some erosion on openings on both tuners and transmitters.

Made in Japan

These were pulled from Art Performance studio.

2 x Sony UHF Synthesized Tuner WRR-805(A) w/ case and belt clip

2 x Sony UHF Synthesized Transmitter WRT-822 w/case and belt clip (note: one antenna is ripped but still attached to base)

Frequency 66-69 782.125.805.875MHZ