The Galaxy Watch Ultra (2025) is Samsung's endurance smartwatch for people who work and train far from a charger. This SKU, SM-L705UAW1XAA, is the 47mm LTE model in Titanium White for the US market (XAA, unlocked). It comes with a white Marine band in Medium/Large. It runs One UI 8 Watch on Wear OS Powered by Samsung, and a Quick Button switches between workouts with a single press. An embedded SIM supports 4G LTE FDD across bands including B2, B4, B5, B12, B13, B14, B66 and B71, plus TDD B40, with 3G WCDMA fallback. That lets you leave your phone at home and still take calls and messages. Wi-Fi 802.11a/b/g/n on 2.4GHz and 5GHz, Bluetooth 5.3 and NFC are built in. Positioning uses GPS, Glonass, Beidou and Galileo. Battery life is the headline. The 590mAh cell is rated up to 80 hours with Always On Display off, 60 hours with it on, and 100 hours in power saving mode. Outdoor GPS workouts run up to 48 hours in Exercise Power Saving. The 1.5-inch 480 x 480 Super AMOLED display includes a Night mode that keeps information visible in the dark without straining your eyes. The watch carries a 10 ATM durability rating. A penta-core processor with 2GB of memory and 64GB of storage (50.0GB available) handles apps and offline content. Galaxy AI adds Energy Score for daily readiness and a Functional Threshold Power estimate for cyclists using a paired power meter. The AGEs index offers insight into how diet may affect metabolic health. A wireless charger is included in the box.