Sennheiser ew 112 P G4 (ew112PG4B) Evolution Wireless G4 Portable Camera Lavalier ME 2 Set 626 - 668 MHz MHz (507616). A broadcast quality sound solution. Providing the highest flexibility for your video sound and field recording applications. A robust wireless microphone system that offers excellent sound quality, simple mounting and ease of use. Rugged all-in-one wireless system with high flexibility for broadcast quality sound, including the clip-on microphone ME2-II (omni-directional) or ME 4 (cardioid) for excellent speech intelligibility and daily on-location use.