Sennheiser Ek 100 G3 - Portable Diversity Receiver with Cl1 1/8-Inch and Cl100 Xlr Unbalanced Output 42 MHz bandwidth: 1680 tunable UHF frequencies for interference-free reception Enhanced frequency bank system with up to 12 compatible frequencies with automatic frequency scan that searches for available frequencies True adaptive-diversity reception for high reception quality User-friendly menu operation with auto-lock function to avoid accidental changing of settings Sturdy metal housing with illuminated graphic display