Apple - Watch SE (2nd gen) vs Samsung - Galaxy Watch Ultra 2
Between the Watch SE (2nd gen) and Galaxy Watch Ultra 2, the Watch SE (2nd gen) comes out ahead in weight and display size, while the Galaxy Watch Ultra 2 wins on battery life and peak brightness. Overall, the Watch SE (2nd gen) scores 56.1 and the Galaxy Watch Ultra 2 scores 50.8 on our Mars Score.
Which should you buy?
The Watch SE (2nd gen) edges ahead on the Mars Score (56.1 vs 50.8), but the 5.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Watch SE (2nd gen) if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight, display size.
Pick the Galaxy Watch Ultra 2 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are battery life, peak brightness, water resistance, among others.
Both ship with comparable cellular, so those specs don't separate the two — focus on the differences below.
Bottom line: the Watch SE (2nd gen) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Apple - Watch SE (2nd gen) wins
- ▲Weight — 27.00 g less. 33 vs 60.
- ▲Display size — 18.67% more. 1.78 " vs 1.5 ".
Why Samsung - Galaxy Watch Ultra 2 wins
- ▲Battery life — 233.33% more. 60 h vs 18 h.
- ▲Peak brightness — 200.00% more. 3000 nits vs 1000 nits.
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
- ▲Has ECG.
- ▲Has SpO2.
Spec comparison
Design
| Spec | Apple - Watch SE (2nd gen) | Samsung - Galaxy Watch Ultra 2 |
|---|---|---|
| Case size | 44 mm | 47 mmlead |
| Weight | 33 glead | 60 g |
| Case material | aluminum | titanium |
| Water resistanceⓘ | 5 ATM | 10 ATMlead |
Display
| Spec | Apple - Watch SE (2nd gen) | Samsung - Galaxy Watch Ultra 2 |
|---|---|---|
| Display size | 1.78 "lead | 1.5 " |
| Always-on display | false | truelead |
| Peak brightnessⓘ | 1000 nits | 3000 nitslead |
Health & Fitness
| Spec | Apple - Watch SE (2nd gen) | Samsung - Galaxy Watch Ultra 2 |
|---|---|---|
| ECG | false | truelead |
| SpO2 | false | truelead |
| Temperature sensor | false | truelead |
| Sleep tracking | true | true |
| Blood pressure | false | truelead |
Battery & Connectivity
| Spec | Apple - Watch SE (2nd gen) | Samsung - Galaxy Watch Ultra 2 |
|---|---|---|
| Battery life | 18 h | 60 hlead |
| GPS | true | true |
| Cellular | true | true |
| NFC | true | true |
| OS | watchOS | WearOSlead |
Frequently asked
Which has longer battery life, Watch SE (2nd gen) or Galaxy Watch Ultra 2?+
Galaxy Watch Ultra 2 lasts 60h vs 18h.
Do Watch SE (2nd gen) or Galaxy Watch Ultra 2 support ECG?+
Galaxy Watch Ultra 2 supports ECG; Watch SE (2nd gen) does not.
Which has cellular, Watch SE (2nd gen) or Galaxy Watch Ultra 2?+
Both offer cellular variants.
Spec-level deep dives
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