Used Sennheiser EW100ENGG3A Wireless Microphone System with EK 100 G3 Diversity Receiver - Frequency Band A (Frequency Range: 516-558 MHZ) EW 100 ENG G3-A
Amazon.com: HQRP Battery Compatible with Sennheiser BA2015 / BA 2015 EK 100 G2, ew 100 G2, ew 100-ENG G3 Headphones Receiver Transmitter : Electronics
Sennheiser DC 2 Batterie Mount Hirose replacement EK100 EK300,G4 G3 G2,EW100 | eBay
Amazon.com: Sennheiser ew 100 ENG G4 Wireless Microphone Combo System A1: (470 to 516 MHz) with SKB iSeries Waterproof System Case and 4-Hour Rapid Charger (4 AA Rechargeable Batteries) : Musical Instruments