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Head-to-head · Best Smartwatches

OnePlus Watch 3 vs Samsung Galaxy Watch Ultra 2

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

OnePlus Watch 3 and Samsung Galaxy Watch Ultra 2 score essentially the same (4.2 vs 4.2). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

OnePlus Watch 3
Ranked #3 in Best Smartwatches
OnePlus Watch 3
12 sources$349as of Aug 22

The OnePlus Watch 3 delivers exceptional battery life, lasting up to five days with all features enabled, making it a standout among Wear OS smartwatches. It features a polished design available in two sizes, robust health tracking capabilities, and a dual-chipset power management system. However, it falls short in software update support and lacks certain health features like ECG and menstrual cycle tracking, particularly in the US market. This smartwatch is ideal for users prioritizing battery longevity and fitness metrics over software longevity and comprehensive health monitoring.

Strengths
  • — Five-day battery life with all features enabled
  • — Sleek and comfortable design with two size options
  • — Robust health features including advanced metrics for sports modes
Watch-outs
  • — Only three years of software and security updates
  • — Lacks menstrual cycle tracking and ECG functionality in the US
$349 · Check Price on AmazonFull review →
Samsung Galaxy Watch Ultra 2
Ranked #4 in Best Smartwatches
Samsung Galaxy Watch Ultra 2
7 sources1 derived$699.99as of Aug 22

The Samsung Galaxy Watch Ultra 2 offers a significant upgrade in battery life and processing power, making it a compelling choice for users seeking a rugged, feature-rich smartwatch. Its 800 mAh battery delivers up to 50 hours of use with always-on display, while the Snapdragon Wear Elite processor enhances AI interactions like hands-free Gemini. However, its premium price point and some missing features like dive mode and trail map search at launch may deter some buyers. The watch is best suited for outdoor enthusiasts and professionals who value durability and long battery life over everyday convenience.

Strengths
  • — 50-hour battery life with always-on display enabled
  • — Fast Snapdragon Wear Elite processor improves AI features like hands-free Gemini
  • — Durable titanium design with scratch-resistant sapphire crystal
Watch-outs
  • — Expensive at $700 ($50 more than previous gen)
  • — Trail map search not functional at launch
  • — Dive mode unavailable at launch
$699.99 · Check Price on AmazonFull review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

OnePlus Watch 3

The OnePlus Watch 3 delivers five-day battery life, which surpasses the Samsung Galaxy Watch Ultra 2 and Apple Watch Series 11, but it lacks the advanced health features found in the Garmin Venu 4 and Apple Watch Ultra 3. Unlike the Google Pixel Watch 4, it doesn't include built-in Gemini AI, and compared to the Xiaomi Watch 5, it lacks Wear OS 6 integration and smart features like YouTube Music. The Apple Watch SE 3 offers better value with its updated design and speaker capabilities.

Samsung Galaxy Watch Ultra 2

The Samsung Galaxy Watch Ultra 2 stands out with its 50-hour battery life and titanium design, but unlike the Apple Watch Series 11, it lacks 5G support and doesn't offer the same level of integration with iOS ecosystems. While the Garmin Venu 4 provides more advanced fitness metrics, the Ultra 2's Snapdragon Wear Elite processor gives it an edge in AI features like hands-free Gemini. However, its high price point and missing dive mode at launch make it less appealing compared to the OnePlus Watch 3, which offers five-day battery life at a more competitive price.

Specs side-by-side

SpecOnePlus Watch 3Samsung Galaxy Watch Ultra 2
Battery631mAh800 mAh
Display TypeAMOLEDSuper AMOLED
ConnectivityBluetooth and Wi-FiLTE; eSIM; Wi-Fi 4; BT 6.0; NFC
Water Resistance5ATMIP68/IP69K; 100m/10ATM; 40m swimproof/diving
OSWear OSAndroid Wear OS 7, One UI Watch 9
CompatibilityAndroidAndroid phones only
Materialstainless steelTitanium case
Dimensions—41.7mm x 45.7mm, 46mm x 49mm
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