
Frequency range: 640-690MHz
Adjustable channel number: 200
Oscillation mode: Phase-locked loop frequency synthesis (PLL)
Harmonic Suppression: -30dB
Modulation method: Frequency modulation (FM)
Frequency modulation method:: Infrared frequency synchronization
Maximum offset: +-45KHz
RF power output: 3-30mW
Microphone pickup head: Dynamic coil type
Power supply method: 2 AA batteries
Usage duration: Approximately 8 hours