This rumored Galaxy Watch 7 upgrade could spell huge gains over the Watch 6A Korean report suggests the switch from a 5nm Exynos W930 to 3nm Exynos W940 could deliver major gains for battery life and performance in a more compact form factor.
Source: This rumored Galaxy Watch 7 upgrade could spell huge gains over the Watch 6 (https://www.androidcentral.com/wearables/galaxy-watch-7-rumored-to-receive-3nm-exynos-chip)