Sennheiser EK100 G3 Bodypack Receiver GB-BAND 606 - 648 MHz-
In fairly good condition, Tested and working perfectly
This is a portable receiver for use with Sennheiser wireless Transmitters and Microphones on GB-BAND 606 - 648 MHz (but will also work with transmitters & mics on G band and B band where frequency's overlap)
Please note this not an IEM receiver
(There are several different Sennheiser bands, if your unsure if this the one you need just ask a question)