Smartwatches / Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) vs OnePlus Watch 3 43mm
Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) vs OnePlus Watch 3 43mm
Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium)
60 hours with the always-on display actually on, and the brightest screen on any wrist.
Wins overall by 0.7 points
Quick Verdict
A 0.7-point gap makes the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) the straightforward choice here. 60 hours with the always-on display actually on, and the brightest screen on any wrist.
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) and OnePlus Watch 3 43mm are both closely matched smartwatch models, and the OnePlus Watch 3 43mm is $450 cheaper than the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) ($249.99 vs $699.99). On Health Tracking, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) leads (8.8 vs 6.0/10) — depth of heart, sleep and body metrics that are genuinely enabled and cleared for use in the US. On Fitness & GPS, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) leads (9.0 vs 7.0/10) — workout tracking, GPS accuracy, sport modes and training analysis. On Value, the OnePlus Watch 3 43mm leads (8.4 vs 6.6/10) — what you get for the money once LTE upcharges and subscriptions are counted in. Overall, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores 7.8/10 across our 8 scoring categories versus 7.1/10 for the OnePlus Watch 3 43mm. Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) | OnePlus Watch 3 43mm |
|---|---|---|
| Price | $699.99 | $249.99 |
| Release Year | 2026 | 2025 |
| Phone Compatibility | Android only. Requires Android 13 or later with 1.5 GB RAM minimum. No iPhone support. On non-Samsung Android you lose ECG, blood pressure, SmartThings camera feeds, Camera Controller and DND/bedtime sync — the same list as the Galaxy Watch9. | Android only in practice. OnePlus markets it as a Wear OS watch requiring Android; the Amazon listing title states in plain text 'not Compatible with iOS'. Sources conflict: Smartprix's spec sheet lists 'Android 9.0+ and iOS', which contradicts both OnePlus and the retail listing — treat iOS as unsupported. |
| Claimed Battery Life (hrs) | 60 | 60 |
| What the Battery Claim Assumes | Samsung's 60-hour figure is quoted with the always-on display ON, which is unusually honest for this category — but it is still a mixed-use claim, not a workout claim. Continuous dual-band GPS and LTE-only use (with the phone left behind) drain it far faster. | OnePlus's 60 h smart-mode figure assumes the low-power RTOS co-processor handling the always-on layer and no heavy GPS. Power Saver mode extends it further but drops Wear OS features; continuous GPS workouts and LTE-style always-connected use are not part of the claim. |
| Case Size (mm) | 47 | 43 |
| Display | 1.52-inch Super AMOLED under sapphire crystal, up to 5000 nits — the brightest smartwatch display sold | 1.32-inch LTPO AMOLED, 466x466. Peak brightness is not published by OnePlus. |
| Operating System | Wear OS (One UI Watch) | Wear OS 5 by Google plus RTOS dual-engine |
| Third-Party Apps | Google Play Store on the watch, same Wear OS catalogue as the Galaxy Watch9 | Google Play Store on the watch — a full Wear OS catalogue, unusual at this price |
| Health Features Enabled in the US | ECG, irregular rhythm notifications and sleep apnea detection are FDA-cleared. Blood pressure rolled out in the US from 31 March 2026 but is not FDA-cleared, is Samsung-phone gated, and needs 28-day cuff re-calibration. BIA body composition included. | Heart rate, SpO2, skin temperature, stress and sleep — all wellness-grade. There is NO ECG and no FDA-cleared feature of any kind on this model in the US; the health story is the weakest of any Wear OS watch here. |
| Subscription Wall | No subscription for core metrics; bundled third-party fitness trials auto-renew at full price. | None. OHealth is free and does not paywall any metric. |
| LTE Option | Not an option — LTE is built into every Ultra2 and included in the $699.99 price. You still pay a carrier for the line. | No LTE variant is sold in the US — the OnePlus Watch 3 43mm is Bluetooth/Wi-Fi only. |
| Water & Dust Rating | 10 ATM (100 m), IP69K, MIL-STD-810H, EN13319 dive certified to 40 m | 5 ATM (50 m) plus IP68 |
| Battery Replacement | No consumer battery-replacement programme; the titanium case is sealed. | OnePlus does not publish a consumer battery-replacement service for the Watch 3. |
| Warranty | 24 months | 12 months |
| Colors | Titanium Gray, Titanium Silver | Black Steel, Silver Steel |
Category Scores
Battery Life
The OnePlus Watch 3 43mm is marginally ahead, 8.2 to 7.8. A gap this small rarely decides a purchase on its own, though it counts if real endurance between charges, judged against what the claim actually assumes rather than the headline number is your priority.
Health Tracking
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) leads clearly here, 8.8 against 6.0 — a 2.8-point margin on depth of heart, sleep and body metrics that are genuinely enabled and cleared for use in the US. If that is what you are buying for, the OnePlus Watch 3 43mm does not close the gap elsewhere.
Fitness & GPS
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) leads clearly here, 9.0 against 7.0 — a 2.0-point margin on workout tracking, GPS accuracy, sport modes and training analysis. If that is what you are buying for, the OnePlus Watch 3 43mm does not close the gap elsewhere.
Ecosystem Freedom
The OnePlus Watch 3 43mm leads clearly here, 3.0 against 2.5 — a 0.5-point margin on the category's trap dimension: how much of the watch still works on a phone other than the maker's own. 10 means full parity on iOS and Android; 1 means one phone brand or nothing. If that is what you are buying for, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) does not close the gap elsewhere.
App Ecosystem
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) leads clearly here, 8.5 against 8.0 — a 0.5-point margin on whether there is a real third-party app store on the wrist or a handful of proprietary mini-apps. If that is what you are buying for, the OnePlus Watch 3 43mm does not close the gap elsewhere.
Display
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) leads clearly here, 9.6 against 8.2 — a 1.4-point margin on panel type, brightness, always-on behaviour and legibility in sunlight. If that is what you are buying for, the OnePlus Watch 3 43mm does not close the gap elsewhere.
Build & Durability
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) leads clearly here, 9.4 against 8.2 — a 1.2-point margin on case and glass materials, water and dust ratings, and how well it survives daily wear. If that is what you are buying for, the OnePlus Watch 3 43mm does not close the gap elsewhere.
Value
The OnePlus Watch 3 43mm leads clearly here, 8.4 against 6.6 — a 1.8-point margin on what you get for the money once LTE upcharges and subscriptions are counted in. If that is what you are buying for, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) does not close the gap elsewhere.
Best For
Choose the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) if…
- • Health Tracking matters most to you — the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores 8.8/10 here (depth of heart, sleep and body metrics that are genuinely enabled and cleared for use in the US).
- • Fitness & GPS matters most to you — the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores 9.0/10 here (workout tracking, GPS accuracy, sport modes and training analysis).
- • Display matters most to you — the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores 9.6/10 here (panel type, brightness, always-on behaviour and legibility in sunlight).
- • Build & Durability matters most to you — the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores 9.4/10 here (case and glass materials, water and dust ratings, and how well it survives daily wear).
- • Your main use case is outdoors.
Choose the OnePlus Watch 3 43mm if…
- • Value matters most to you — the OnePlus Watch 3 43mm scores 8.4/10 here (what you get for the money once LTE upcharges and subscriptions are counted in).
- • You want to spend less — it's $450 cheaper.
Pros & Cons
Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium)
Pros
- +60 hours quoted with the always-on display ON — the only maker here that states the harder number
- +5000 nits is genuinely twice as bright as the brightest Apple Watch
- +10 ATM plus EN13319 dive certification and IP69K, on a Wear OS watch with Play Store apps
- +LTE included rather than a $50 upcharge and a second ASIN
Cons
- −Same iPhone lock-out and the same non-Samsung Android feature loss as the Galaxy Watch9
- −$699.99 buys you a watch whose blood-pressure headline feature is not FDA-cleared
- −The dive app was still 'coming later in 2026' at launch — you are buying a promise
- −47mm titanium is heavy, and Samsung will not replace the battery
OnePlus Watch 3 43mm
Pros
- +60 hours of real Wear OS battery life — two and a half times a Galaxy Watch9
- +Stainless steel case at 37.8 g, lighter and better built than most sub-$300 rivals
- +Full Google Play Store, so you are not stuck in a proprietary app gallery
- +Frequently discounted to $199, which is remarkable for a Wear OS watch
Cons
- −No ECG and no FDA-cleared health feature at all — a $249 wellness tracker, not a heart-health device
- −Android only; the Amazon listing says so in the product title
- −No LTE variant sold in the US
- −OnePlus's own store price has drifted around ($270 at last check versus $249.99 on Amazon) — shop the ASIN, not the brand site
- −Peak display brightness is not published by OnePlus
Shop by Need
FAQs
Is the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) or OnePlus Watch 3 43mm better overall?+
Based on our 8-category scoring, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Health Tracking, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) or the OnePlus Watch 3 43mm?+
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores higher on Health Tracking (8.8/10 vs 6.0/10) — depth of heart, sleep and body metrics that are genuinely enabled and cleared for use in the US.
Which is better for Fitness & GPS, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) or the OnePlus Watch 3 43mm?+
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores higher on Fitness & GPS (9.0/10 vs 7.0/10) — workout tracking, GPS accuracy, sport modes and training analysis.
Which is better for Value, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) or the OnePlus Watch 3 43mm?+
The OnePlus Watch 3 43mm scores higher on Value (8.4/10 vs 6.6/10) — what you get for the money once LTE upcharges and subscriptions are counted in.
Which is better for Display, the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) or the OnePlus Watch 3 43mm?+
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) scores higher on Display (9.6/10 vs 8.2/10) — panel type, brightness, always-on behaviour and legibility in sunlight.
Is the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) worth the price difference over the OnePlus Watch 3 43mm?+
The OnePlus Watch 3 43mm is the cheaper option at $249.99 versus $699.99. Whether the pricier model is "worth it" depends on how much you value its lead in Health Tracking.
Which is better suited to my use case?+
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) is the better fit if you mainly care about outdoors. The OnePlus Watch 3 43mm is the better fit for android or long-battery.
What's the warranty on the Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) vs the OnePlus Watch 3 43mm?+
The Samsung Galaxy Watch Ultra2 (47mm, LTE, Titanium) ships with a 24-month warranty; the OnePlus Watch 3 43mm ships with a 12-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Cheaper Option
Amazfit Bip 6 (46mm) — $79.99
Premium Option
Apple Watch Ultra 3 (49mm, GPS + Cellular, Titanium) — $799.00
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.