Garmin claims up to 320 hours of activity tracking with its new solar smartwatch.

The Apple Watch Ultra 4 can run for up to 84 hours between charges, but Garmin’s new $899.99 Enduro 4 can track your activities for up to 320 hours or function as a basic smartwatch for up to 90 days. Instead of squeezing in a massive battery, the Enduro 4’s sapphire-protected touchscreen has an integrated solar panel so extending its battery life requires daily sun exposure. [Image: https://platform.theverge.com/wp-content/uploads/sites/2/2026/10/garmin1.jpg?quality=90&strip=all] [Image: https://platform.theverge.com/wp-content/uploads/sites/2/2026/10/garmin2.jpg?quality=90&strip=all]