Samsung Galaxy Watch Ultra 2 Review: Thinner, Brighter, Massive Battery, and First-of-Their-Kind Health Sensors

The headline display upgrade is the 1.52-inch Super AMOLED panel hitting 5,000 nits of peak brightness — up from 3,000 nits on the original and the brightest ever on a smartwatch . The resolution is 498×498, making maps, workouts, and notifications crisp and readable even in direct sunlight .

Performance: The First Galaxy Watch with Snapdragon Wear Elite

The Galaxy Watch Ultra 2 is the first Galaxy Watch powered by the Qualcomm Snapdragon Wear Elite Platform, replacing the Exynos W1000 . Samsung paired the chip with 2GB of RAM and 64GB of storage, and the watch runs One UI Watch 9 based on Wear OS 7 . Reviewers describe performance as buttery-smooth, with notably faster app loading and more accurate dual-frequency GPS (L1+L5) tracking thanks to the new chipset . Connectivity includes Wi-Fi 6, Bluetooth 6.0 with LE support, and NFC .

Battery Life: A Massive 800mAh Cell

The single most practical upgrade is the 800mAh battery — a 35% capacity increase over the original's 590mAh . Samsung claims multi-day battery life, and early reviews confirm a meaningful jump in endurance. TechRadar reports up to 60 hours with the always-on display enabled . The rated capacity is 784mAh, with Samsung marketing 800mAh as the typical average under normal conditions .

Durability: Now with IP69K Protection

Building on the original's already rugged credentials, the Ultra 2 adds IP69K ingress protection, meaning it can withstand high-temperature water jets . This sits alongside the existing 10ATM water resistance (dive-proof to 100 meters), MIL-STD-810H durability, and EN13319 diving certification .

Health Tracking: First Smartwatch with AGEs, Antioxidant, and Vascular Load Sensors

The Galaxy Watch Ultra 2 introduces three experimental sensors never before seen in a consumer smartwatch :

• AGEs Index (Advanced Glycation End-products): Measures metabolic aging markers that accumulate in skin tissue, now tracking trends over time rather than single readings .
• Antioxidant Level Sensor: Estimates your body's ability to combat oxidative stress, providing a clearer picture of overall wellness and recovery .
• Vascular Load Sensor: Tracks vascular health .

These build on the updated BioActive Sensor, which handles continuous heart rate, blood oxygen, stress, body composition, and sleep tracking — including a new Sleep Apnea feature for detecting breathing disruptions during sleep . The watch also gains AI-powered wellness insights, new outdoor and adventure sports tracking modes, turn-by-turn navigation, hydration guidance based on sweat loss, and dedicated diving support via Mares .

Pricing and Availability

The Galaxy Watch Ultra 2 launched on August 7, 2026 after being announced at Samsung's Galaxy Unpacked event in London on July 22 . It is available in a single 47mm Bluetooth + LTE model .

The Bottom Line

With a thinner profile, vastly better battery life, the brightest display in its class, and a trio of genuinely novel health sensors, the Galaxy Watch Ultra 2 addresses almost every shortcoming of the first-generation model. The $50 price increase is modest given the scope of the hardware and software upgrades, and early reviews from Engadget, CNET, TechRadar, and T3 consistently place it at the top of the Android smartwatch market .