A model number, batch ID, or experimental designation. In biological research, "Y118" specifically refers to Tyrosine 118 , a critical phosphorylation site on the protein
It’s possible that:
The always-on display (AOD) feature is well-optimized. While enabled, the watch automatically drops to a low refresh rate (5Hz) to conserve battery, showing you the time and a stripped-back face. When you flick your wrist, it jumps instantly to full color and 60Hz smoothness. Alina Y118 35
This is where the truly separates itself from cheap clones. Many small smartwatches sacrifice sensor accuracy for size. Alina did the opposite. They partnered with a leading optical sensor manufacturer to fit a 6-LED array into the 35mm footprint. A model number, batch ID, or experimental designation