@codl HYT have a thing for displaying the time with liquid, the outline of the skull you can see is a small tube, there's two reservoirs of fluid in the back, one coloured, one transparent, they don't mix

The movement pushes more or less of each into the tube in the front so the transition line between the fluids lines up with an hour marking

No minute hand on this one, but usually they'd do that with one hand in the middle

@codl the image shows the time's at 2 o'clock, you can see the transition line there

@troubleMoney oh god that's complicated