It looks like a slab of stone with the numbers engraved permanently on the surface. You know, as a decorative sculpture can be set at a table in the living room. Except, the Etch watch is a true timing machine, so those numbers engraved on the surface get modified at regular intervals.
No, the clock does not really change the engraving on a slab of rock, as it would require some pure and simple magic. Instead, the rock-like surface is an elastic membrane that is hollowed out in several sections to form numbers and show time, with an aesthetic that resembles etched on a smooth rock surface.
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