Galaxy Watch 9 vs Galaxy Watch Ultra 2: Full comparison

The Galaxy Watch 9 and Galaxy Watch Ultra 2 are Samsung's newest smartwatches, with the main differences being size, battery, storage, screen brightness, and outdoor durability. Both watches run on the same Snapdragon Wear Elite chip and Wear OS 7, sharing the same core health sensors. They were announced on July 22, 2026, in London, with pre-orders starting the same day and general availability on August 7, 2026.

Design-wise, the Watch 9 weighs 31.5g and measures 8.6mm thick for the 40mm model, while the Ultra 2 weighs 61.5g and measures 10.7mm thick. The Watch 9 uses an aluminium case, while the Ultra 2 uses titanium, explaining part of the price gap. Reviewers noted that the Ultra 2 feels more comfortable and sits lower on the wrist, and the Ultra 2's case is 12% thinner despite a larger battery.

The watch displays also differ, with the Watch 9 featuring a 1.34-inch or 1.47-inch screen, rated up to 3,000 nits depending on the model. The Ultra 2 boasts a 1.52-inch screen rated up to 5,000 nits, which shines brighter outdoors. Both screens are protected by sapphire crystal, but the Ultra 2's display performs better in direct sunlight.

Performance and chip specs are identical for both watches, featuring the Snapdragon Wear Elite (SDW6100) processor and 2GB of RAM. The Watch 9 comes with 32GB of storage, while the Ultra 2 has a generous 64GB. This extra storage allows you to store music, maps, or apps on your watch for phone-free workouts.

Battery life is where the two watches differ most significantly. The Watch 9's 390mAh battery provides up to 30 hours with the always-on display on and 40 hours off. The Ultra 2's 800mAh battery lasts up to 60 hours with the always-on display on and 80 hours off. Independent testing shows the Ultra 2 can last close to three days with typical use. The Ultra 2's larger battery also takes about 90 minutes to fully charge, while charging times for the Watch 9 vary.

Durability-wise, the Watch 9 offers 5ATM water resistance and IP68 protection, along with MIL-STD-810H military-grade testing for everyday exercise, rain, and supported swimming. The Ultra 2 takes it a step further with 10ATM water resistance, IP69K protection, MIL-STD-810H testing, and EN13319 dive certification. This makes the Ultra 2 suitable for recreational diving down to 40m, but not for open-depth diving.