This requirement is for a total of twelve (12) sets, Brand Name, Unite Interpreter Equipment for USACE Europe District. Additionally, USACE Europe District requires two (2) Sennheiser headset micropho... This requirement is for a total of twelve (12) sets, Brand Name, Unite Interpreter Equipment for USACE Europe District. Additionally, USACE Europe District requires two (2) Sennheiser headset microphones. Each set consists of twenty (20) Digital Bodypack Receiver, twenty (20) Single-Ear Headphone, two (2) Digital Bodypack Transmitter, and One (1) Charging and Transport Case.