The Zerry button
One red knob does everything. Every rotate, click, and hold gesture in one place.
The entire device is driven by a single control: the red Zerry button, a rotary knob (18 clicks per turn) that you can also press. Everything you do is some combination of rotate, click, double-click, and hold.
On the widget overview
| Gesture | What it does |
|---|---|
| Press | Wake the device and refresh the widgets |
| Rotate | Move the focus corners from widget to widget |
| Click (with a widget focused) | Open that widget's full-screen view |
| Double-click | Open Settings |
| Hold ~2 s | Force a fresh update right now |
In a full-screen widget
| Gesture | What it does |
|---|---|
| Hold + rotate | Switch directly to the next or previous full-screen widget |
| Double-click | Back to the widget overview |
Everywhere
| Gesture | What it does |
|---|---|
| Rotate | Move between options, rows, or keys |
| Click | Select |
| Double-click | Usually "back" or a shortcut; each screen shows its own hints |
The rescue reset
If the device ever seems completely stuck, there is a reset that always works, because it is wired into the circuit board itself rather than handled by software:
Hold the Zerry button for about 15 seconds, then release. The device performs a hardware reset and starts fresh. Your settings, Wi-Fi networks, and widgets are untouched. This is a reboot, not a factory reset.
So that you never trigger this by accident, the device shows a warning on screen once a continuous hold passes 8 seconds. Release the button and nothing happens.