Click:
While the device is in any mode, this will start and stop the movement in 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 and while the device is synchronizing to videos, etc.

Click:
While the device is in HAMP this will decrease and increase the speed of the strokes.

While the device is in HRPP, this will swap between patterns.

The action button has two main functions

Swap between connection modes

When using the device finishes booting pressing and holding the action button will swap between WiFi + Bluetooth mode and Bluetooth mode.

Swap between control modes

When the device is being operated