This is a very simple demo of a smartwatch black & white GUI powered by MicroEJ VEE. It runs on a STMicroelectronics STM32F412G-DISCO board (ARM Cortex-M4 processor architecture).
The graphical user interface runs on a 240×240 display with touchscreen. For limited memory footprint and reduced bill of material, the app uses a 2-bit per pixel version of the MicroUI stack.
The video shows a GUI with smooth animations and great user interactions. The GUI demonstrates the usual features that can be found on a fitness smartwatch: time, stopwatch, notifications, battery level, sport activity, GPS information, temperature, etc.