Carrier Frequency Range : 823-832MHz RF Power Output : 10mW (10dBm) Oscillation Mode : PLL synthesized, 16 channels selectable Frequency Stability : +/- 0,002% Frequency Response : 40Hz – 16kHz Microphone Capsule (Lavalier) : Condenser Battery : 3V DC (2x1,5V AA size batteries – batteries NOT included!)