Between the Watch SE (2nd gen) and ScanWatch 2, the Watch SE (2nd gen) comes out ahead in display size and weight, while the ScanWatch 2 wins on battery life and ecg. Overall, the Watch SE (2nd gen) scores 56.1 and the ScanWatch 2 scores 72.6 on our Mars Score.
Which should you buy?
The ScanWatch 2 is the clear pick on raw spec strength, leading by 16.5 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
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 display size, weight, cellular, among others.
Pick the ScanWatch 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, ecg, spo2.
Both ship with comparable water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: the ScanWatch 2 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
- ▲Display size — 182.54% more. 1.78 " vs 0.63 ".
- ▲Weight — 26.00 g less. 33 vs 59.
- ▲Has Cellular.
- ▲Peak brightness: 1000 nits vs 0 nits.
Why Withings - ScanWatch 2 wins
- ▲Battery life — 3900.00% more. 720 h vs 18 h.
- ▲Has ECG.
- ▲Has SpO2.
Spec comparison
Design
| Spec | Apple - Watch SE (2nd gen) | Withings - ScanWatch 2 |
|---|---|---|
| Case size | 44 mmlead | 42 mm |
| Weight | 33 glead | 59 g |
| Case material | aluminum | stainless steel |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Apple - Watch SE (2nd gen) | Withings - ScanWatch 2 |
|---|---|---|
| Display size | 1.78 "lead | 0.63 " |
| Always-on display | false | false |
| Peak brightnessⓘ | 1000 nitslead | 0 nits |
Health & Fitness
| Spec | Apple - Watch SE (2nd gen) | Withings - ScanWatch 2 |
|---|---|---|
| ECG | false | truelead |
| SpO2 | false | truelead |
| Temperature sensor | false | truelead |
| Sleep tracking | true | true |
| Blood pressure | false | false |
Battery & Connectivity
| Spec | Apple - Watch SE (2nd gen) | Withings - ScanWatch 2 |
|---|---|---|
| Battery life | 18 h | 720 hlead |
| GPS | truelead | false |
| Cellular | truelead | false |
| NFC | truelead | false |
| OS | watchOS | Withings OSlead |
Frequently asked
Which has longer battery life, Watch SE (2nd gen) or ScanWatch 2?+
ScanWatch 2 lasts 720h vs 18h.
Do Watch SE (2nd gen) or ScanWatch 2 support ECG?+
ScanWatch 2 supports ECG; Watch SE (2nd gen) does not.
Which has cellular, Watch SE (2nd gen) or ScanWatch 2?+
Watch SE (2nd gen) offers a cellular variant; ScanWatch 2 is Wi-Fi only.
Spec-level deep dives
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