Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Huawei - Watch GT 6 | Garmin - Venu 3 |
|---|---|---|
| Peak brightness | 1500 nits | 1000 nits |
| Display size | 1.47 " | 1.4 " |
| Weight | 52 g | 47 g |
Between the Watch GT 6 and Venu 3, the Watch GT 6 comes out ahead in peak brightness / display size, while the Venu 3 wins on weight. Overall, the Watch GT 6 scores 75 and the Venu 3 scores 74.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (75 vs 74.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Watch GT 6 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, display size. The single most decisive one: Peak brightness — 50.00% more. 1500 nits vs 1000 nits.
Pick the Venu 3 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 5.00 g less. 47 vs 52.
Both ship with comparable battery life, ecg, cellular, 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: Huawei - Watch GT 6 or Garmin - Venu 3?
Huawei - Watch GT 6 leads the current Mars Score by 0.1 points.The more useful decision is the trade-off behind that result: compare display size against the way you will actually use the product.
Choose Huawei - Watch GT 6 if…
Huawei - Watch GT 6 has the measurable edge on peak brightness nits, display size in.
Choose Garmin - Venu 3 if…
Garmin - Venu 3 has the measurable edge on weight g.
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 Huawei - Watch GT 6 wins
- ▲Peak brightness — 50.00% more. 1500 nits vs 1000 nits.
- ▲Display size — 5.00% more. 1.47 " vs 1.4 ".
Why Garmin - Venu 3 wins
- ▲Weight — 5.00 g less. 47 vs 52.
Spec comparison
Design
| Spec | Huawei - Watch GT 6 | Garmin - Venu 3 |
|---|---|---|
| Case size | 46 mmlead | 45 mm |
| Weight | 52 g | 47 glead |
| Case material | stainless-steel | stainless steel |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Huawei - Watch GT 6 | Garmin - Venu 3 |
|---|---|---|
| Display size | 1.47 "lead | 1.4 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 1500 nitslead | 1000 nits |
Health & Fitness
| Spec | Huawei - Watch GT 6 | Garmin - Venu 3 |
|---|---|---|
| ECG | true | true |
| SpO2 | true | true |
| Temperature sensor | true | true |
| Sleep tracking | true | true |
| Blood pressure | false | false |
Battery & Connectivity
| Spec | Huawei - Watch GT 6 | Garmin - Venu 3 |
|---|---|---|
| Battery lifeⓘ | 336 h | 336 h |
| GPS | true | true |
| Cellular | false | false |
| NFC | true | true |
| OS | HarmonyOS | Garmin OSlead |
Frequently asked
Which has longer battery life, Watch GT 6 or Venu 3?+
Venu 3 lasts 336 hours vs 336 hours.
Do Watch GT 6 or Venu 3 support ECG?+
Both support ECG.
Which has cellular, Watch GT 6 or Venu 3?+
Neither offers cellular.