The Sennheiser EW IEM G4 Wireless Twin In-Ear Monitor System has been engineered to give you fantastic wireless monitoring. Consisting of a two bodypack receivers two pairs of Sennheisers 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. The EW IEM Twin system ensures that you get the results youre looking for every single time. 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.