The EM 300 G4 is a reliable multipurpose tool for all applications. Tailor-made for business and education settings, this wireless receiver is easy to use — a user-friendly menu with convenient jog wheel provides fast access to everything, and setup is as easy as pushing the "sync" button. Its OLED display features automatic dimming, a blue sync LED, red warning LED, and dedicated Escape button. Beyond that, you'll benefit from up to 88MHz of switching bandwidth, remote operation, and backward compatibility with previous evolution G1, G2, and G3 systems.