Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Huawei - Watch Ultimate | Polar - Vantage V3 |
|---|---|---|
| Battery life | 336 h | 168 h |
| Weight | 76 g | 57 g |
| Display size | 1.5 " | 1.39 " |
| Water resistance | 10 ATM | 5 ATM |
Between the Watch Ultimate and Vantage V3, the Watch Ultimate comes out ahead in battery life / display size, while the Vantage V3 wins on weight. Overall, the Watch Ultimate scores 71.5 and the Vantage V3 scores 69.2 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (71.5 vs 69.2). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Watch Ultimate if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are battery life, display size, water resistance. The single most decisive one: Battery life — 100.00% more. 336 h vs 168 h.
Pick the Vantage V3 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 19.00 g less. 57 vs 76.
Both ship with comparable ecg, cellular, spo2, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Huawei - Watch Ultimate or Polar - Vantage V3?
Huawei - Watch Ultimate leads the current Mars Score by 2.3 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 Huawei - Watch Ultimate if…
Huawei - Watch Ultimate has the measurable edge on battery life h, display size in, water resistance atm.
Choose Polar - Vantage V3 if…
Polar - Vantage V3 has the measurable edge on 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 Huawei - Watch Ultimate wins
- ▲Battery life — 100.00% more. 336 h vs 168 h.
- ▲Display size — 7.91% more. 1.5 " vs 1.39 ".
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
Why Polar - Vantage V3 wins
- ▲Weight — 19.00 g less. 57 vs 76.
Spec comparison
Design
| Spec | Huawei - Watch Ultimate | Polar - Vantage V3 |
|---|---|---|
| Case size | 48.5 mmlead | 47 mm |
| Weight | 76 g | 57 glead |
| Case material | titanium | aluminum |
| Water resistanceⓘ | 10 ATMlead | 5 ATM |
Display
| Spec | Huawei - Watch Ultimate | Polar - Vantage V3 |
|---|---|---|
| Display size | 1.5 "lead | 1.39 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 1000 nits | 1000 nits |
Health & Fitness
| Spec | Huawei - Watch Ultimate | Polar - Vantage V3 |
|---|---|---|
| ECG | true | true |
| SpO2 | true | true |
| Temperature sensor | true | true |
| Sleep tracking | true | true |
| Blood pressure | false | false |
Battery & Connectivity
| Spec | Huawei - Watch Ultimate | Polar - Vantage V3 |
|---|---|---|
| Battery lifeⓘ | 336 hlead | 168 h |
| GPS | true | true |
| Cellular | false | false |
| NFC | truelead | false |
| OS | HarmonyOS | Polar OSlead |
Frequently asked
Which has longer battery life, Watch Ultimate or Vantage V3?+
Watch Ultimate lasts 336 hours vs 168 hours.
Do Watch Ultimate or Vantage V3 support ECG?+
Both support ECG.
Which has cellular, Watch Ultimate or Vantage V3?+
Neither offers cellular.