Pixel Watch 4 wins on display brightness (3000 nits Actua 360), battery (40 hours), and satellite SOS per official specs while matching the $349 price. Galaxy Watch 8 provides earlier July 2025 availability and Exynos W1000 AI health features on Wear OS 6. Both run current Wear OS platforms with strong AI integrations but Pixel's later release gives it measurable edges in brightness and endurance.