Simplicity is Best

AI Tranlated：First , this is my first time making a watch face, and it's purely for my own needs, so I won't be putting too much effort into it. The face is simple: tick marks and hands, digital time display, and a heart-rate ring. Below I explain two features that are compromises for aesthetics: the heart-rate ring, and the two horizontal lines above and below the digital time. First, the lines. The top line represents battery level — as the battery decreases, both ends shrink toward the center. The bottom line represents body battery, with the same logic. When the battery percentage drops below 10% or body battery below 15, the entire line turns red. Now the outer heart‑rate ring: Ring 1: range 30–90 bpm, changes from gray to blue as heart rate rises. Ring 2: range 90–150, changes from cyan to green. Ring 3: range 150–180, changes from yellow to orange. Ring 4: range 180–210, changes from red to purple (doge). Rings 1 through 4 are stacked, with Ring 1 at the bottom and Ring 4 on top. The ring changes according to the current heart rate, similar to a tachometer in a car. When the heart rate exceeds the 180 limit, the central time and date disappear, and a red hand creates the atmosphere of approaching the redline (this is not a good thing — try to keep your heart rate moderate).

Heart rate dashboard, like a tachometer.