Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Google - Pixel Watch 4 | Garmin - Venu 3 |
|---|---|---|
| Battery life | 48 h | 336 h |
| Peak brightness | 3000 nits | 1000 nits |
| Weight | 37 g | 47 g |
| Cellular | true | false |
Between the Pixel Watch 4 and Venu 3, the Pixel Watch 4 comes out ahead in peak brightness / weight, while the Venu 3 wins on battery life. Overall, the Pixel Watch 4 scores 69.8 and the Venu 3 scores 74.9 on our Mars Score.
Which should you buy?
The Venu 3 edges ahead on the Mars Score (69.8 vs 74.9), but the 5.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Pixel Watch 4 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. The single most decisive one: Peak brightness — 200.00% more. 3000 nits vs 1000 nits.
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. The single most decisive one: Battery life — 600.00% more. 336 h vs 48 h.
Both ship with comparable ecg, display size, spo2, so those specs do not 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.
Which should you buy: Google - Pixel Watch 4 or Garmin - Venu 3?
Garmin - Venu 3 leads the current Mars Score by 5.1 points.The more useful decision is the trade-off behind that result: compare battery life against the way you will actually use the product.
Choose Google - Pixel Watch 4 if…
Google - Pixel Watch 4 has the measurable edge on peak brightness nits, weight g, has cellular.
Choose Garmin - Venu 3 if…
Garmin - Venu 3 has the measurable edge on battery life h.
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 Google - Pixel Watch 4 wins
- ▲Peak brightness — 200.00% more. 3000 nits vs 1000 nits.
- ▲Weight — 10.00 g less. 37 vs 47.
- ▲Has Cellular.
Why Garmin - Venu 3 wins
- ▲Battery life — 600.00% more. 336 h vs 48 h.
Spec comparison
Design
| Spec | Google - Pixel Watch 4 | Garmin - Venu 3 |
|---|---|---|
| Case size | 45 mm | 45 mm |
| Weight | 37 glead | 47 g |
| Case material | aluminum | stainless steel |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Google - Pixel Watch 4 | Garmin - Venu 3 |
|---|---|---|
| Display size | 1.4 " | 1.4 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 3000 nitslead | 1000 nits |
Health & Fitness
| Spec | Google - Pixel Watch 4 | Garmin - Venu 3 |
|---|---|---|
| ECG | true | true |
| SpO2 | true | true |
| Temperature sensor | true | true |
| Sleep tracking | true | true |
| Blood pressure | false | false |
Battery & Connectivity
| Spec | Google - Pixel Watch 4 | Garmin - Venu 3 |
|---|---|---|
| Battery lifeⓘ | 48 h | 336 hlead |
| GPS | true | true |
| Cellular | truelead | false |
| NFC | true | true |
| OS | WearOS | Garmin OSlead |
Frequently asked
Which has longer battery life, Pixel Watch 4 or Venu 3?+
Venu 3 lasts 336 hours vs 48 hours.
Do Pixel Watch 4 or Venu 3 support ECG?+
Both support ECG.
Which has cellular, Pixel Watch 4 or Venu 3?+
Pixel Watch 4 offers a cellular variant; Venu 3 is Wi-Fi only.