Functions of the bodypack receiver:
1. Fixed antenna
2. On/off switch/volume knob for the earphones
3. Output Jack (3.5mm) for Prodipe IEM3 earphones
4. Battery indicator light (flashes red when battery power low)
5. Visual indicator for UHF signal (RF)
6. LCD screen with information display (channels, etc.)
7. "ESC" button (menu)
8. Up "▲" (menu)
9. Down "▼" (menu)
10. "SET" button (menu)
11. Battery compartment (takes two AA batteries, not included)
12. Belt clip