Absolutely, the silhouette is a key design lever. A slimmer, low‑profile case hugs the wrist better, reducing pressure points and letting heat escape, which actually helps the battery run cooler and longer. Placing the battery in the lower half of the case keeps the center of gravity toward the wrist, so the watch feels lighter and won’t drift forward during a run. From a power‑budget view, a narrower case reduces the surface area for the display, cutting back on backlight usage – that’s a direct battery‑life win. Aesthetically, a clean, slightly convex shape lets the display curve gently with the wrist, giving a natural look that feels premium without being bulky. So yes, shape is the sweet spot where ergonomics, energy efficiency, and style collide.

A slanted edge can actually help airflow along the skin, so heat can escape more efficiently than a flat bevel. When the edge angles away from the wrist, it creates a tiny channel that lets the body’s natural micro‑circulation pull warm air out. In practice that means the watch feels cooler during extended use, especially on a hot day. The downside is that the slant can catch on pockets or clothing, slightly reducing comfort if it’s too pronounced. So a moderate angle—just enough to encourage airflow without creating a snag point—would be the sweet spot for balancing heat dissipation and usability.