Features: Dual signal UHF high band Includes two wireless handheld microphones Includes two rechargeable lithium battery cases & two AA battery cases Polar Pattern: Dynamic Cardioid Outputs: Individual XLR outputs per channel, one 1/4'' mixed output Frequency stability: ±0.005% Modulation mode: FM Maximum deviation range: ±45kHz with limiting compressor Silence circuit cuts static noise if microphones are off or out of range Auto mute circuit reduces popping noise Dual adjustable gain controls Frequency Response: 45Hz-20kHz Signal to noise ratio: 100dB Total harmonic distortion: <0.5% Audio dynamic range: 92dB Service area: 120 ft Microphones charge in 2-3 hours Fully charged microphones work for 6-8 hours of usage LCD display with microphone frequency Available in Ten different sets allowing you to use up to 20 microphones in one location Dimensions (L x W x H): 19'' x 9.5'' x 1.75