Wireless monitoring system with full control over your performance your direct link, everywhere, everyday. The G4 In-Ear Monitoring sets make your gig an extraordinary experience not just for your audience, but also for you. Robust bodypack receiver and reliable in-ear monitoring IE 4 headphones delivering clarity along the whole frequency spectrum for daily use on stage. Engineered for professional live sound: Rugged all-in-one wireless monitoring system for in-ear applications. Half-rack stereo transmitter in a full-metal housing with OLED display for full control. Easy and flexible wireless synchronization between 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. Transmission Range: up to 100 meters. High RF output power (up to 50 mW) depending on country regulations. The package contains: SR IEM G4 - stereo transmitter, 1 EK IEM G4 - stereo receiver, 1 IE 4 earphones, 4 AA batteries, rod antenna, GA 3 - rackmount set, power supply, manual. Frequency range: 516 - 558 MHz.Package Contents: Rack Holders;Receiver;Transmitter;Antenna;AA Battery;Adapter;Headphones;ManualRackmountable: YesSystem: UHFUK/EU Power supply included: YesBattery Operation: YesFrequency Band: 516 - 558 MHzPower Supply: Adapter or Battery;12VMade in: ChinaExternal Antenna: NoBattery Type: AAFrequency Range: 25 Hz - 15 kHzVariant: G4-A.