L button: press this button to move the cursor left.
R button: press this button to move the cursor right.
✓ button: press this button to select.

L + R: Press the left button and right button simultaneously to go back to a previous screen.
Switch: the on/off switch of the device.

If the device is left idle for 3 minutes, it will go into "sleep mode". Press any button (L, R, Select) to exit sleep mode.