System SpecsOscillator Type: Pll Synthesized ControlFrequency Band: Uhf 556. 71 MHz-595. 66 MHzWireless Range: 330-feet (100m)Channels/Groups: 2 Groups of 48 Channels (96 Unique Frequencies) Frequency Response: 40Hz-18 KHz+/-3 dB Audio input: 3. 5mm Trs Power supply: Two Aa batteries per Unit (up to 6 hours of run-time) Transmitter/Receiver Dimensions (each/without antenna): 4. 2" x 2. 6" x 1. 1" (106 x 66 x 28mm) Weight (each): 80g (3. 2 oz) without batteries Lav Mic Specs Polar pattern: Omni-directional Frequency Range: 35 Hz to 18 kHz Signal to Noise Ratio: 74dBConnector: 3. 5mm Trs Cable Length: 1. 2m (4')