Simultaneous Systems Per Band: 10; System: Analog, Frequency 548-572 MHz, Operating Range 200-250 ft. Line of sight, Microphone Included: 2 x 825 Microphones, Polar Pattern: Cardioid, Frequency Response: 80Hz-14kHz; Transmitter: Battery Life: Up to 10 hours; Transmitter Dimensions: 10.4" x 1.9"; Tra..