Samsung and Huawei both claim to make the most capable smartwatch money can buy. The Galaxy Watch Ultra 2 launched on August 7, 2026, with a $699 price tag, a 3nm processor, and a display that hits 5,000 nits. The Huawei Watch Ultimate 2 has been available since September 2025, starting at roughly $899, built from zirconium liquid metal and rated for 150-meter dives.
These are the two most extreme Android-compatible smartwatches on the market right now. But they’re built for very different people. Here’s where each one actually wins.
Design and materials: titanium vs zirconium
The Galaxy Watch Ultra 2 uses a titanium case with sapphire crystal glass. Samsung trimmed the thickness to 10.7mm (down from 12.1mm on the previous generation) and kept the weight at 61.5 grams without the band. The squircle shape looks modern, feels light on the wrist, and works for 24/7 wear during sleep tracking.
The Huawei Watch Ultimate 2 takes a completely different approach. Its case is zirconium-based liquid metal surrounded by nanocrystal ceramic bezels. The result looks like a traditional luxury dive watch, not a piece of tech. But it’s noticeably heavier at 80.5 grams and thicker at 12.9mm.
Quick comparison on build:
- Galaxy Watch Ultra 2: 47mm, 61.5g, 10.7mm thick, titanium + sapphire
- Huawei Watch Ultimate 2: 48.5mm (black) / 47.8mm (blue), 80.5g, 12.9mm thick, zirconium + ceramic + sapphire
Samsung is the watch you forget you’re wearing. Huawei is the watch people notice on your wrist.
Display: 5,000 nits vs 3,500 nits
Samsung brought a significant upgrade here. The Galaxy Watch Ultra 2 has a 1.52-inch Super AMOLED display at 498 x 498 pixels with peak brightness hitting 5,000 nits. That’s a first for any smartwatch and makes outdoor readability a non-issue, whether you’re trail running at noon or checking mid-dive stats.
Huawei’s Watch Ultimate 2 packs a 1.5-inch LTPO AMOLED panel at 466 x 466 pixels with 3,500 nits peak brightness. That’s still excellent by smartwatch standards, but a 30% gap in raw nit count is visible in direct sunlight.
Winner: Samsung. The 5,000-nit display is the brightest you’ll find on any watch right now.
Performance and software: Wear OS vs HarmonyOS
This is where the two watches diverge the most.
The Galaxy Watch Ultra 2 runs the Snapdragon Wear Elite (3nm, 5-core) processor with 2GB RAM and 64GB storage on Wear OS 7 with One UI 9 Watch. That means full access to Google’s app ecosystem, Google Maps, Google Wallet, and third-party apps from the Play Store. Samsung also confirmed five years of software and security updates.
The Huawei Watch Ultimate 2 runs HarmonyOS, which is compatible with both Android and iOS phones. It handles notifications, calls, and fitness tracking well. But the app ecosystem is significantly smaller. You won’t find Google Maps, Spotify offline, or most third-party fitness apps. What Huawei does get is dramatically better power efficiency from its lighter operating system.
If apps matter to you, Samsung wins by default. If you treat your watch purely as a fitness and health tracker (and don’t need third-party apps), Huawei’s software does exactly what it needs to without draining battery.
Sports and adventure features: trail running vs deep-sea diving
The Galaxy Watch Ultra 2 is built for trail runners and hikers. Samsung added dedicated trail run tracking that monitors elevation gain, terrain difficulty, and route navigation. The Nutrition Alert system analyzes sweat loss and tells you when to hydrate. It also carries EN13319 dive certification for the first time, supporting dives to 40 meters with real-time depth and temperature tracking (though the advanced dive computer through Mares requires a separate paid subscription).
The Huawei Watch Ultimate 2 is a full-blown dive instrument. Its 20ATM rating supports dives to 150 meters, and it runs the Bühlmann ZHL-16C decompression algorithm used in professional dive computers. The headline feature is sonar-based underwater communication: two Watch Ultimate 2 devices can exchange preset messages and SOS alerts up to 60 meters deep. No other consumer smartwatch does this.
Huawei also packs professional-grade golf mode with 3D HD maps of 17,000+ courses globally, swing analysis, and plays-like distance calculations.
Here’s the breakdown:
- Samsung excels at: trail running, hiking, general fitness tracking, heart health AI, app-based workout integrations
- Huawei excels at: deep-sea diving (150m), sonar underwater comms, golf, expedition mode with offline GNSS tracking
Health tracking: BioActive AI vs TruSense X-TAP
Samsung pushes hard on AI-powered health analysis. The BioActive sensor combined with the Snapdragon Wear Elite’s dedicated NPU delivers FDA-cleared sleep apnea detection, heart health scoring, daily cardio capacity tracking, and personalized recovery recommendations. The watch learns your patterns over time and adjusts its advice accordingly.
Huawei’s approach is faster but less ecosystem-deep. The X-TAP button delivers a full health report across 10+ metrics in under 60 seconds with a single 3-second press. It covers ECG, atrial fibrillation alerts, blood oxygen, stress levels, and even tracks 12 emotional states to suggest breathing exercises.
Both watches support eSIM for standalone calling and continuous heart rate monitoring. Samsung’s advantage is the AI layer that connects data across days and weeks. Huawei’s advantage is speed and simplicity.
Battery life: the gap is real
This is where Huawei dominates.
- Galaxy Watch Ultra 2: 800mAh battery, approximately 1.5 to 2 days with LTE and continuous health tracking. Up to 4 days with always-on display disabled and lighter use. Full charge takes about 90 minutes.
- Huawei Watch Ultimate 2: roughly 4.5 days standard use with LTE. Up to 11 days in power-saving mode. Quick charge gives a full day of use from just 15 minutes of charging.
Samsung improved battery life dramatically over the previous Ultra (590mAh to 800mAh), but HarmonyOS is simply more efficient than Wear OS for power consumption. If you travel frequently or hate nightly charging, Huawei’s battery advantage is hard to ignore.
Water resistance comparison
| Spec | Galaxy Watch Ultra 2 | Huawei Watch Ultimate 2 |
| Water resistance | 10ATM (100m static) | 20ATM (200m static) |
| Dive depth | 40m (EN13319) | 150m (EN13319) |
| IP rating | IP69K | IP68 / IP69 |
| Underwater comms | No | Sonar messaging (30-60m) |
| Dive algorithm | Basic depth tracking | Bühlmann ZHL-16C |
Price comparison
| Model | Price |
| Galaxy Watch Ultra 2 (47mm, all colors) | $699 |
| Huawei Watch Ultimate 2 (black, 48.5mm) | ~$899 |
| Huawei Watch Ultimate 2 (blue, 47.8mm) | ~$999 |
Samsung is the more affordable option with a stronger app ecosystem. Huawei commands a premium for its materials and dive capabilities.
The verdict
Buy the Galaxy Watch Ultra 2 if you want the best Wear OS smartwatch available. The 5,000-nit display, Snapdragon Wear Elite processor, and five years of updates make it the strongest Android smartwatch on the market. If you run trails, need Google apps on your wrist, or want AI health insights that improve over time, Samsung is the pick.
Buy the Huawei Watch Ultimate 2 if you actually dive, play golf seriously, or want a smartwatch that lasts nearly a week on a single charge. The 150-meter dive rating with sonar communication is genuinely unique in the consumer smartwatch space. If you also prefer the look of a traditional luxury watch over a tech gadget, Huawei’s design is unmatched.
For most people who just want a premium fitness and health smartwatch? The Galaxy Watch Ultra 2 is the safer, more versatile choice. But “most people” isn’t really what either of these watches was built for.
FAQs
Can the Galaxy Watch Ultra 2 work as a dive watch?
Yes, but with limits. It carries EN13319 dive certification for depths up to 40 meters with basic depth and temperature tracking. Advanced dive computer features (decompression limits, nitrogen monitoring) require a separate Mares app subscription that wasn’t available at launch. The Huawei Watch Ultimate 2 supports dives to 150 meters with a built-in decompression algorithm and no extra subscription.
Does the Huawei Watch Ultimate 2 work with iPhones?
Yes. HarmonyOS is compatible with both Android and iOS devices. However, some features may be limited compared to pairing with a Huawei or Android phone. The Galaxy Watch Ultra 2 works only with Android phones running Android 11 or later.
Which watch has better battery life?
The Huawei Watch Ultimate 2 lasts significantly longer. Expect roughly 4.5 days of standard use compared to 1.5 to 2 days for the Galaxy Watch Ultra 2. In power-saving mode, Huawei stretches to 11 days while Samsung maxes out around 4 days.
Is the Galaxy Watch Ultra 2 worth the upgrade from the original Galaxy Watch Ultra?
Yes. The upgrade is substantial: a 35% larger battery (800mAh vs 590mAh), 5,000-nit display (vs 3,000 nits), a new 3nm processor, thinner profile (10.7mm vs 12.1mm), and EN13319 dive certification that the original lacked.
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