Carrier Frequency Range : 823-832MHz RF Power Output : LO (5dBm -3,16mW) - HI (10dBm-10mW) Oscillation Mode : PLL synthesized, 16 channels selectable Frequency Stability : +/-0,002% Frequency Response : 40Hz – 17kHz Microphone Capsule : Dynamic Battery : 3V DC (2 x 1,5V AA series batteries – Batteries NOT included!)