[leoc]

It's different for simple BT notification buzzers, but "maximalist" smartwatches like the Apple Watch surely call out for the latest and greatest semiconductor processes. They face harsh trade-offs between capability, size and battery life, harsh enough to help make them still marginal as mainstream consumer products, and those dilemmas would be significantly eased if performance-per-watt and size were improved. They're also high-margin products so manufacturing at fancy fabs should be affordable.