Between the Pixel Watch 3 (45mm) and Venu 3, the Pixel Watch 3 (45mm) comes out ahead in peak brightness and weight, while the Venu 3 wins on battery life. Overall, the Pixel Watch 3 (45mm) scores 46.7 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 15.3 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.
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.
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.
Both ship with comparable ecg, display size, 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 Google - Pixel Watch 3 (45mm) wins
- ▲Peak brightness — 100.00% more. 2000 nits vs 1000 nits.
- ▲Weight — 10.00 g less. 37 vs 47.
- ▲Has Cellular.
Why Garmin - Venu 3 wins
- ▲Battery life — 833.33% more. 336 h vs 36 h.
Spec comparison
Design
| Spec | Google - Pixel Watch 3 (45mm) | 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 3 (45mm) | Garmin - Venu 3 |
|---|---|---|
| Display size | 1.4 " | 1.4 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 2000 nitslead | 1000 nits |
Health & Fitness
| Spec | Google - Pixel Watch 3 (45mm) | 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 3 (45mm) | Garmin - Venu 3 |
|---|---|---|
| Battery life | 36 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 3 (45mm) or Venu 3?+
Venu 3 lasts 336h vs 36h.
Do Pixel Watch 3 (45mm) or Venu 3 support ECG?+
Both support ECG.
Which has cellular, Pixel Watch 3 (45mm) or Venu 3?+
Pixel Watch 3 (45mm) offers a cellular variant; Venu 3 is Wi-Fi only.
Spec-level deep dives
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