The Sennheiser EW IEM G4 Wireless In-Ear Monitor System has been engineered to give you fantastic wireless monitoring. Consisting of a single bodypack receiver, Sennheiser's IE 4 in-ear headphones, and a half-rack stereo transmitter, you can take advantage of crystal-clear monitoring with exceptional durability. An easy-to-read OLED display lets you configure your system in seconds, whilst also allowing you to view important information at a glance. Take advantage of reliable transmission with an operating range of up to 100-metres, whilst quick and intuitive infrared synchronisation helps you get up and running in seconds. And with 16 channels available for simultaneous use in the same space, you can build a powerful system to fit any situation, big or small.