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')