Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Garmin - Venu 4 | Polar - Vantage V3 |
|---|---|---|
| Battery life | 264 h | 168 h |
| Weight | 45 g | 57 g |
| Display size | 1.4 " | 1.39 " |
Between the Venu 4 and Vantage V3, the Venu 4 comes out ahead in battery life / weight, while the Vantage V3 wins on several specs. Overall, the Venu 4 scores 73.6 and the Vantage V3 scores 69.2 on our Mars Score.
Which should you buy?
The Venu 4 edges ahead on the Mars Score (73.6 vs 69.2), but the 4.4-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Venu 4 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, weight, display size. The single most decisive one: Battery life — 57.14% more. 264 h vs 168 h.
The Vantage V3 similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
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: Garmin - Venu 4 or Polar - Vantage V3?
Garmin - Venu 4 leads the current Mars Score by 4.4 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 Garmin - Venu 4 if…
Garmin - Venu 4 has the measurable edge on battery life h, weight g, display size in.
Choose Polar - Vantage V3 if…
Polar - Vantage V3 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
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 Garmin - Venu 4 wins
- ▲Battery life — 57.14% more. 264 h vs 168 h.
- ▲Weight — 12.00 g less. 45 vs 57.
- ▲Display size — 0.72% more. 1.4 " vs 1.39 ".
Why Polar - Vantage V3 wins
- No decisive advantages.
Spec comparison
Design
| Spec | Garmin - Venu 4 | Polar - Vantage V3 |
|---|---|---|
| Case size | 45 mm | 47 mmlead |
| Weight | 45 glead | 57 g |
| Case material | aluminum | aluminum |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Garmin - Venu 4 | Polar - Vantage V3 |
|---|---|---|
| Display size | 1.4 "lead | 1.39 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 1000 nits | 1000 nits |
Health & Fitness
| Spec | Garmin - Venu 4 | Polar - Vantage V3 |
|---|---|---|
| ECG | true | true |
| SpO2 | true | true |
| Temperature sensor | true | true |
| Sleep tracking | true | true |
| Blood pressure | false | false |
Battery & Connectivity
| Spec | Garmin - Venu 4 | Polar - Vantage V3 |
|---|---|---|
| Battery lifeⓘ | 264 hlead | 168 h |
| GPS | true | true |
| Cellular | false | false |
| NFC | truelead | false |
| OS | Garmin OS | Polar OSlead |
Frequently asked
Which has longer battery life, Venu 4 or Vantage V3?+
Venu 4 lasts 264 hours vs 168 hours.
Do Venu 4 or Vantage V3 support ECG?+
Both support ECG.
Which has cellular, Venu 4 or Vantage V3?+
Neither offers cellular.