Samsung - Galaxy Watch Ultra 2 vs Garmin - vívoactive 5
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Samsung - Galaxy Watch Ultra 2 | Garmin - vívoactive 5 |
|---|---|---|
| Battery life | 60 h | 264 h |
| Peak brightness | 3000 nits | 1000 nits |
| Weight | 60 g | 26 g |
| Display size | 1.5 " | 1.2 " |
| Water resistance | 10 ATM | 5 ATM |
| ECG | true | false |
Between the Galaxy Watch Ultra 2 and vívoactive 5, the Galaxy Watch Ultra 2 comes out ahead in peak brightness / display size, while the vívoactive 5 wins on battery life / weight. Overall, the Galaxy Watch Ultra 2 scores 67.5 and the vívoactive 5 scores 55.7 on our Mars Score.
Which should you buy?
The Galaxy Watch Ultra 2 is the clear pick on raw spec strength, leading by 11.8 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 Galaxy Watch Ultra 2 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are peak brightness, display size, water resistance, among others. The single most decisive one: Peak brightness — 200.00% more. 3000 nits vs 1000 nits.
Pick the vívoactive 5 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, weight. The single most decisive one: Battery life — 340.00% more. 264 h vs 60 h.
Both ship with comparable spo2, so those specs do not separate the two — focus on the differences below.
Bottom line: the Galaxy Watch Ultra 2 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Samsung - Galaxy Watch Ultra 2 or Garmin - vívoactive 5?
Samsung - Galaxy Watch Ultra 2 leads the current Mars Score by 11.8 points.The more useful decision is the trade-off behind that result: compare display size, battery life against the way you will actually use the product.
Choose Samsung - Galaxy Watch Ultra 2 if…
Samsung - Galaxy Watch Ultra 2 has the measurable edge on peak brightness nits, display size in, water resistance atm.
Choose Garmin - vívoactive 5 if…
Garmin - vívoactive 5 has the measurable edge on battery life h, weight g.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Samsung - Galaxy Watch Ultra 2 wins
- ▲Peak brightness — 200.00% more. 3000 nits vs 1000 nits.
- ▲Display size — 25.00% more. 1.5 " vs 1.2 ".
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
- ▲Has ECG.
- ▲Has Cellular.
Why Garmin - vívoactive 5 wins
- ▲Battery life — 340.00% more. 264 h vs 60 h.
- ▲Weight — 34.00 g less. 26 vs 60.
Spec comparison
Design
| Spec | Samsung - Galaxy Watch Ultra 2 | Garmin - vívoactive 5 |
|---|---|---|
| Case size | 47 mmlead | 42 mm |
| Weight | 60 g | 26 glead |
| Case material | titanium | polymer |
| Water resistanceⓘ | 10 ATMlead | 5 ATM |
Display
| Spec | Samsung - Galaxy Watch Ultra 2 | Garmin - vívoactive 5 |
|---|---|---|
| Display size | 1.5 "lead | 1.2 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 3000 nitslead | 1000 nits |
Health & Fitness
| Spec | Samsung - Galaxy Watch Ultra 2 | Garmin - vívoactive 5 |
|---|---|---|
| ECG | truelead | false |
| SpO2 | true | true |
| Temperature sensor | truelead | false |
| Sleep tracking | true | true |
| Blood pressure | truelead | false |
Battery & Connectivity
| Spec | Samsung - Galaxy Watch Ultra 2 | Garmin - vívoactive 5 |
|---|---|---|
| Battery lifeⓘ | 60 h | 264 hlead |
| GPS | true | true |
| Cellular | truelead | false |
| NFC | true | true |
| OS | WearOS | Garmin OSlead |
Frequently asked
Which has longer battery life, Galaxy Watch Ultra 2 or vívoactive 5?+
vívoactive 5 lasts 264 hours vs 60 hours.
Do Galaxy Watch Ultra 2 or vívoactive 5 support ECG?+
Galaxy Watch Ultra 2 supports ECG; vívoactive 5 does not.
Which has cellular, Galaxy Watch Ultra 2 or vívoactive 5?+
Galaxy Watch Ultra 2 offers a cellular variant; vívoactive 5 is Wi-Fi only.