Key Features:

Engineered for professional live sound: Rugged all-in-one wireless system for singers and presenters.
State-of-the-art live sound featuring Sennheiser's renowned e 835, e 845, e 865, e 935, e 945 capsules on a lightweight aluminium transmitter with integrated mute switch
True diversity half-rack receiver in a full-metal housing with intuitive LCD display for full control
Easy and flexible wireless synchronization between transmitter and receiver via infrared
Fast frequency allocation for up to 12 receivers via new linking functionality
Up to 20 compatible channels
Up to 42 MHz bandwidth with 1680 selectable frequencies, fully tunable in a stable UHF range
Transmission Range: up to 100 meters / 300 feet
High RF output power (up to 30 mW) depending on country regulations