Click:
While the device is in manual mode (green LED), this will start and stop the device.

Click:
Increases and decreases the stroke length. The LED will flash red as soon as the minimum or maximum length have been reached.

Hold:

Adjusts the stroke zone. Hold the UP button to make the device stroke closer to the top. Hold the DOWN button to reset it.

Both of the adjustments can be made in manual mode (green LED) and while the device is synchronizing to videos, etc.

Click:
While the device is in manual mode (green LED), this will decrease and increase the speed of the strokes.

Click:
While the device is in manual mode (green LED), this will put the device into online mode (magenta LED).

Hold:

While the device is in manual mode (green LED), this will put the device into Bluetooth (blue LED).