Sennheiser EW 100 G4-835-S-A1

Frequency Range: A1 (470-516 MHz)
Transmission Range: Up to 100 meters (330 feet)
Microphone Type: Dynamic
Polar Pattern: Cardioid
Audio Frequency Response: 80 Hz – 18 kHz
Battery Life: Up to 12 hours (depending on battery type)
Receiver Type: Diversity receiver
Connector: XLR, 1/4″ TRS
Power Supply: 12-18V DC (adapter included)
Additional Features: Easy frequency synchronization, rugged metal housing, intuitive controls