Specification:

• Frequency Range : 640.00~689.75MHz

• Modulation Method : FM

• Frequency Response : 40Hz~15KHz

• Dynamic Range : >100dB

• Audio Output : 0-300mV

• Receive supply voltage : 3.7V-4.2V (lithium battery)

• Receive operating current : <150mA

• Receive continuous use time : Standard (3.7v1200mA)

   8-9 hours

• Radiator power supply voltage : 2 1.5V dry batteries

• Transmitter Operating current : <150mA