System Specs Modulation - DQPSK Frequency Range - VHF 204-215MHz Frequency Response - 40Hz-18 KHz+/-3 dB Audio input - 3.5mm TRS Power supply - Two AA batteries (up to 5 hours of run-time) Transmitter/Receiver Dimensions (each) - 4" x 2.4" x 1.8" (102 x 62 x 45mm) Weight (each) - 80g (2.8 oz) without batteries Lav Mic Specs Polar pattern - Omni-directional Connector - 3.5mm TRS Cable Length - 1.2m (4')