Between the Vantage V3 and Venu 3, the Vantage V3 comes out ahead in several specs, while the Venu 3 wins on battery life and weight. Overall, the Vantage V3 scores 53.5 and the Venu 3 scores 62 on our Mars Score.
Which should you buy?
The Venu 3 is the clear pick on raw spec strength, leading by 8.5 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.
The Vantage V3 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the Venu 3 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, display size.
Both ship with comparable ecg, cellular, spo2, so those specs don't separate the two — focus on the differences below.
Bottom line: the Venu 3 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Polar - Vantage V3 wins
- No decisive advantages.
Why Garmin - Venu 3 wins
- ▲Battery life — 100.00% more. 336 h vs 168 h.
- ▲Weight — 10.00 g less. 47 vs 57.
- ▲Display size — 0.72% more. 1.4 " vs 1.39 ".
Spec comparison
Design
| Spec | Polar - Vantage V3 | Garmin - Venu 3 |
|---|---|---|
| Case size | 47 mmlead | 45 mm |
| Weight | 57 g | 47 glead |
| Case material | aluminum | stainless steel |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Polar - Vantage V3 | Garmin - Venu 3 |
|---|---|---|
| Display size | 1.39 " | 1.4 "lead |
| Always-on display | true | true |
| Peak brightnessⓘ | 1000 nits | 1000 nits |
Health & Fitness
| Spec | Polar - Vantage V3 | Garmin - Venu 3 |
|---|---|---|
| ECG | true | true |
| SpO2 | true | true |
| Temperature sensor | true | true |
| Sleep tracking | true | true |
| Blood pressure | false | false |
Battery & Connectivity
| Spec | Polar - Vantage V3 | Garmin - Venu 3 |
|---|---|---|
| Battery life | 168 h | 336 hlead |
| GPS | true | true |
| Cellular | false | false |
| NFC | false | truelead |
| OS | Polar OSlead | Garmin OS |
Frequently asked
Which has longer battery life, Vantage V3 or Venu 3?+
Venu 3 lasts 336h vs 168h.
Do Vantage V3 or Venu 3 support ECG?+
Both support ECG.
Which has cellular, Vantage V3 or Venu 3?+
Neither offers cellular.
Spec-level deep dives
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