The Receiver is brand new and unused, however does not come with the original packaging. The Sennheiser EK100 G4 Bodypack Wireless Microphone Receiver is a 100g unit designed for professional audio setups. It operates within the frequency range of 823 – 865 Mhz and is part of the EW100 G4 model series. Ideal for musicians, DJs, and audio professionals, this microphone receiver offers reliable wireless connectivity for enhanced performance.