Sennheiser ew IEM G4-B

EW IEM G4 is a wireless Ear Monitor system from Sennheiser.

Full control over your performance - your direct link, everywhere, every day.
The In-Ear G4 monitor sets make your concert an extraordinary experience, not only for your audience, but for you as well.
Robust pocket receiver and reliable in-ear headphones
The IE 4 headphones bring clarity across the entire spectrum of frequencies for everyday use on stage.
Robust pocket receiver and reliable in-ear listening IE 4 headphones deliver clarity across the frequency spectrum for everyday use on stage
Half-rack stereo transmitter in a fully metallic housing with OLED display for total control
Easy and flexible wireless synchronization Transmitter and receiver via infrared.
Compatible with Sennheiser WSM control software for flexible frequency allocation
Up to 16 compatible channels
Up to 42 MHz bandwidth with 1680 selectable frequencies, fully tunable in a stable UHF range.
Range: up to 100 meters / 300 feet.
High RF output power (up to 30 mW) according to country regulations.