Sennheiser EW 100 G4-ME2 Wireless Lavalier Microphone System - G Band | eBay
Amazon.com: Sennheiser EW 122P G4 Camera-Mount Wireless Lavalier Microphone System, A1: 470 to 516 MHz (2-Pack) Bundle with SKB 3I1209-4-BH4 SKB iSeries Waterproof Case and Rapid Charger with 4 AA Batteries :