Your smartwatch dies every night. The Garmin Enduro 4 laughs at that. The new ultra-endurance GPS watch harvests sunlight through a Power Sapphire lens for up to 90 days of smartwatch use or 320 hours of GPS tracking, and in expedition mode with decent sun, Garmin’s spec sheet simply reads “unlimited.” The trick is a 1.4-inch MIP display that sips power instead of chugging it.
The real upgrade is under the hood: the Enduro 4 inherits the Fenix 9’s processor with 50 percent more RAM, a map engine that pans 30 percent faster, and double the storage at 64GB. Add grade-adjusted pace targets, stamina zones, and a featherweight 66-gram build with a titanium bezel, and you have the ultimate watch for ultrarunners and multi-day adventurers.

It is available now at $899.99, the same price the Enduro 3 launched at in 2024.

