Samsung’s second-generation ultra watch arrives with a familiar chunky silhouette and a much larger battery. In this Galaxy Watch Ultra 2 review, the headline is endurance: the 800mAh cell and Snapdragon Wear Elite chipset combine to deliver three days of typical use with the always-on display enabled, and up to five days when workouts and the always-on screen are set aside. At $700, it undercuts Apple’s Watch Ultra 4 by $100, though the real competition may come from Samsung’s own $380 Galaxy Watch 9.
Design and display
The 47mm titanium case measures 10.7mm thick and weighs 61.5 grams, making it lighter and slimmer than both its predecessor and Apple’s latest Ultra. It carries an IP69K rating for dust and high-pressure water resistance, plus 10 ATM water resistance for dives up to 100 meters. The 1.52-inch screen reaches 5,000 nits, up from 3,500 nits on the original Watch Ultra and brighter than most rivals. The squircle shape remains divisive, and Samsung’s proprietary Dynamic Lug System limits band choices mostly to first-party options. There is still no rotating bezel, and the side buttons protrude less than before.
A promised dedicated diving app had not arrived months after launch, despite the watch’s diving-friendly hardware.
Battery performance
With notifications, daily hour-long gym sessions, podcast and music controls, and nightly sleep tracking, the watch lasted three days before dropping below 20 percent. Over a week, it needed charging only twice. A fully charged unit also lasted a weekend trip without a top-up. The larger battery contributes to the thicker case, but the trade-off is easy to accept for anyone tired of daily charging.
Software and interface
Navigation relies on three hardware buttons plus edge swipes: down for Control Center, up for the app drawer, right for notifications, and left for fitness metrics and weather. The learning curve is steep, and app icons can look too similar, though a recent-apps panel helps. Samsung splits health features between the Health and Health Monitor apps to manage medical-grade functions and regional approvals. Many metrics, including sleep details, require opening the paired phone to view them.
The Heart Health Score combines sleep, stress, activity and body composition into one number, but it is buried behind a tile and a “Show on phone” prompt. Antioxidant tracking requires removing the watch and pressing a thumb to the rear sensors; new trend charts and daily logs accompany it. Hydration tracking targets longer, more intense workouts than most casual users attempt. Loud noise detection is new to Samsung wearables.
Sleep and health tracking
Sleep setup now needs only three days of data from the past two weeks, down from seven, which lowers the barrier for people who charge overnight. A sleep coaching “pet” builds a four-to-eight-week program from survey answers and early sleep patterns. Upgraded sleep apnea detection, folded into Health Monitor, requires two nights of tight, high-on-the-wrist wear and analyzes blood oxygen, heart rate variability and movement for signs of moderate-to-severe obstructive sleep apnea. It is not a clinical diagnosis.
Several features, including the sleep apnea test, ECG and blood pressure monitoring, require a Galaxy phone. Automatic workout detection proved more consistent than on an Apple Watch Ultra 3.
Verdict
The Galaxy Watch Ultra 2 pairs premium hardware and a uniquely bright display with battery life that outlasts most smartwatch competition. Health tracking is broad but uneven: sleep tools have improved, while antioxidant and hydration features can feel inconsistent or irrelevant. At $700, it is Samsung’s most capable wearable, and the choice between it and an Apple Watch Ultra 4 depends more on which phone you carry than on the watches themselves.
