Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Samsung - Galaxy Watch 7 (44mm) | Garmin - Venu 3 |
|---|---|---|
| Battery life | 40 h | 336 h |
| Peak brightness | 3000 nits | 1000 nits |
| Weight | 34 g | 47 g |
| Display size | 1.47 " | 1.4 " |
| Cellular | true | false |
Between the Galaxy Watch 7 (44mm) and Venu 3, the Galaxy Watch 7 (44mm) comes out ahead in peak brightness / weight, while the Venu 3 wins on battery life. Overall, the Galaxy Watch 7 (44mm) scores 70.9 and the Venu 3 scores 74.9 on our Mars Score.
Which should you buy?
The Venu 3 edges ahead on the Mars Score (70.9 vs 74.9), but the 4.0-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Galaxy Watch 7 (44mm) 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, display size, among others. 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 — 740.00% more. 336 h vs 40 h.
Both ship with comparable ecg, spo2, water resistance, 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: Samsung - Galaxy Watch 7 (44mm) or Garmin - Venu 3?
Garmin - Venu 3 leads the current Mars Score by 4.0 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 Samsung - Galaxy Watch 7 (44mm) if…
Samsung - Galaxy Watch 7 (44mm) has the measurable edge on peak brightness nits, weight g, display size in.
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 Samsung - Galaxy Watch 7 (44mm) wins
- ▲Peak brightness — 200.00% more. 3000 nits vs 1000 nits.
- ▲Weight — 13.00 g less. 34 vs 47.
- ▲Display size — 5.00% more. 1.47 " vs 1.4 ".
- ▲Has Cellular.
Why Garmin - Venu 3 wins
- ▲Battery life — 740.00% more. 336 h vs 40 h.
Spec comparison
Design
| Spec | Samsung - Galaxy Watch 7 (44mm) | Garmin - Venu 3 |
|---|---|---|
| Case size | 44 mm | 45 mmlead |
| Weight | 34 glead | 47 g |
| Case material | aluminum | stainless steel |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Samsung - Galaxy Watch 7 (44mm) | Garmin - Venu 3 |
|---|---|---|
| Display size | 1.47 "lead | 1.4 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 3000 nitslead | 1000 nits |
Health & Fitness
| Spec | Samsung - Galaxy Watch 7 (44mm) | Garmin - Venu 3 |
|---|---|---|
| ECG | true | true |
| SpO2 | true | true |
| Temperature sensor | true | true |
| Sleep tracking | true | true |
| Blood pressure | truelead | false |
Battery & Connectivity
| Spec | Samsung - Galaxy Watch 7 (44mm) | Garmin - Venu 3 |
|---|---|---|
| Battery lifeⓘ | 40 h | 336 hlead |
| GPS | true | true |
| Cellular | truelead | false |
| NFC | true | true |
| OS | WearOS | Garmin OSlead |
Frequently asked
Which has longer battery life, Galaxy Watch 7 (44mm) or Venu 3?+
Venu 3 lasts 336 hours vs 40 hours.
Do Galaxy Watch 7 (44mm) or Venu 3 support ECG?+
Both support ECG.
Which has cellular, Galaxy Watch 7 (44mm) or Venu 3?+
Galaxy Watch 7 (44mm) offers a cellular variant; Venu 3 is Wi-Fi only.