2024-01-18 00:00:00 Animated Rotary Engine Watch Face for Wear OS The watch face shows the principle of operation of the Wankel rotary engine. You will see how the rotor rotates in the stator, as well as the ignition, intake and exhaust phases. At the top, your steps are shown on the left, and your heart rate is on the right. In the settings, you can select one complication (widget) for the AOD mode.