Apple - Watch SE 3 vs Samsung - Galaxy Watch 6 Classic
Between the Watch SE 3 and Galaxy Watch 6 Classic, the Watch SE 3 comes out ahead in weight and display size, while the Galaxy Watch 6 Classic wins on battery life and peak brightness. Overall, the Watch SE 3 scores 56.1 and the Galaxy Watch 6 Classic scores 48.9 on our Mars Score.
Which should you buy?
The Watch SE 3 edges ahead on the Mars Score (56.1 vs 48.9), but the 7.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Watch SE 3 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 6 Classic 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, ecg, among others.
Both ship with comparable cellular, water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: the Watch SE 3 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 3 wins
- ▲Weight — 26.00 g less. 33 vs 59.
- ▲Display size — 21.09% more. 1.78 " vs 1.47 ".
Why Samsung - Galaxy Watch 6 Classic wins
- ▲Battery life — 122.22% more. 40 h vs 18 h.
- ▲Peak brightness — 100.00% more. 2000 nits vs 1000 nits.
- ▲Has ECG.
- ▲Has SpO2.
Spec comparison
Design
| Spec | Apple - Watch SE 3 | Samsung - Galaxy Watch 6 Classic |
|---|---|---|
| Case size | 44 mm | 47 mmlead |
| Weight | 33 glead | 59 g |
| Case material | aluminum | stainless steel |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Apple - Watch SE 3 | Samsung - Galaxy Watch 6 Classic |
|---|---|---|
| Display size | 1.78 "lead | 1.47 " |
| Always-on display | false | truelead |
| Peak brightnessⓘ | 1000 nits | 2000 nitslead |
Health & Fitness
| Spec | Apple - Watch SE 3 | Samsung - Galaxy Watch 6 Classic |
|---|---|---|
| ECG | false | truelead |
| SpO2 | false | truelead |
| Temperature sensor | false | truelead |
| Sleep tracking | true | true |
| Blood pressure | false | truelead |
Battery & Connectivity
| Spec | Apple - Watch SE 3 | Samsung - Galaxy Watch 6 Classic |
|---|---|---|
| Battery life | 18 h | 40 hlead |
| GPS | true | true |
| Cellular | true | true |
| NFC | true | true |
| OS | watchOS | WearOSlead |
Frequently asked
Which has longer battery life, Watch SE 3 or Galaxy Watch 6 Classic?+
Galaxy Watch 6 Classic lasts 40h vs 18h.
Do Watch SE 3 or Galaxy Watch 6 Classic support ECG?+
Galaxy Watch 6 Classic supports ECG; Watch SE 3 does not.
Which has cellular, Watch SE 3 or Galaxy Watch 6 Classic?+
Both offer cellular variants.
Spec-level deep dives
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