Between the Pixel Watch 3 (45mm) and Vantage V3, the Pixel Watch 3 (45mm) comes out ahead in peak brightness and weight, while the Vantage V3 wins on battery life. Overall, the Pixel Watch 3 (45mm) scores 46.7 and the Vantage V3 scores 53.5 on our Mars Score.
Which should you buy?
The Vantage V3 edges ahead on the Mars Score (46.7 vs 53.5), but the 6.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Pixel Watch 3 (45mm) 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, weight, cellular, among others.
Pick the Vantage V3 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.
Both ship with comparable ecg, spo2, water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: the Vantage V3 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Google - Pixel Watch 3 (45mm) wins
- ▲Peak brightness — 100.00% more. 2000 nits vs 1000 nits.
- ▲Weight — 20.00 g less. 37 vs 57.
- ▲Has Cellular.
- ▲Display size — 0.72% more. 1.4 " vs 1.39 ".
Why Polar - Vantage V3 wins
- ▲Battery life — 366.67% more. 168 h vs 36 h.
Spec comparison
Design
| Spec | Google - Pixel Watch 3 (45mm) | Polar - Vantage V3 |
|---|---|---|
| Case size | 45 mm | 47 mmlead |
| Weight | 37 glead | 57 g |
| Case material | aluminum | aluminum |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Google - Pixel Watch 3 (45mm) | Polar - Vantage V3 |
|---|---|---|
| Display size | 1.4 "lead | 1.39 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 2000 nitslead | 1000 nits |
Health & Fitness
| Spec | Google - Pixel Watch 3 (45mm) | Polar - Vantage V3 |
|---|---|---|
| ECG | true | true |
| SpO2 | true | true |
| Temperature sensor | true | true |
| Sleep tracking | true | true |
| Blood pressure | false | false |
Battery & Connectivity
| Spec | Google - Pixel Watch 3 (45mm) | Polar - Vantage V3 |
|---|---|---|
| Battery life | 36 h | 168 hlead |
| GPS | true | true |
| Cellular | truelead | false |
| NFC | truelead | false |
| OS | WearOS | Polar OSlead |
Frequently asked
Which has longer battery life, Pixel Watch 3 (45mm) or Vantage V3?+
Vantage V3 lasts 168h vs 36h.
Do Pixel Watch 3 (45mm) or Vantage V3 support ECG?+
Both support ECG.
Which has cellular, Pixel Watch 3 (45mm) or Vantage V3?+
Pixel Watch 3 (45mm) offers a cellular variant; Vantage V3 is Wi-Fi only.
Spec-level deep dives
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