You are bidding on "SENNHEISER EK100 G3 B band Wireless Bodypack Receiver for SK, SKM, SKP B band only" used in very Good working condition. 

From the FCC website:NOTE: Wireless microphones that operate in the new 600 MHz service band (the 617-652 MHz and 663-698 MHz frequencies) will be required to cease operation no later than July 13, 2020. Spectrum will continue to be available for wireless microphone use on the other TV channels 2-36 (TV band frequencies that fall below 608 MHz), on portions of the 600 MHz guard band (the 614-616 MHz frequencies) and the 600 MHz duplex gap (the 653-663 MHz frequencies).