Transmitter:
1) LCD Screen: Display: Frequency, Battery power, Signal, etc.
2) Power Switch: ON / OFF
3) Frequency button: Press-to-change frequency of handheld microphone. Receiver frequency will change automatically.
4) Battery: 2 pcs AA battery supply power.
Receiver: Li-battery: 450mA (4-6 hours)
Low power light USB interface
RF / AF light power switch