Frequency range: 640-690MHz
Number of adjustable channels: 100×2
Audio output: balanced output and mixedoutput
Modulation method: Frequency Modulation (FM)
Battery specifications: 2 AA batteries
Power supply specifications: 100-240V 50-60Hz 12VDC (switching power adapter) or 220VAC/50-60HZ 12VDC (linear power supply)