Sennheiser EW 500 Film G4 Wireless Combo System

Features
Highly versatile solution for professional film sound
Robust all-in-one wireless system for professional recording
Easy to use and effortless setup
Simple mounting
Easy and flexible wireless synchronisation between transmitter and receiver via infrared
Up to 88MHz bandwidth, up to 32 channels
Up to 100 meter range
Increased RF output power (10/30/50mW)
Up to 8 hours of operation time