Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Huawei - Watch GT 6 | Xiaomi - Watch S4 |
|---|---|---|
| Peak brightness | 1500 nits | 2200 nits |
| Weight | 52 g | 44 g |
| Battery life | 336 h | 360 h |
| Display size | 1.47 " | 1.43 " |
| Cellular | false | true |
Between the Watch GT 6 and Watch S4, the Watch GT 6 comes out ahead in display size, while the Watch S4 wins on peak brightness / weight. Overall, the Watch GT 6 scores 75 and the Watch S4 scores 76.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (75 vs 76.3). 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 you care most about display size. The biggest gaps in its favor are display size. The single most decisive one: Display size — 2.80% more. 1.47 " vs 1.43 ".
Pick the Watch S4 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 peak brightness, weight, battery life, among others. The single most decisive one: Peak brightness — 46.67% more. 2200 nits vs 1500 nits.
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: Huawei - Watch GT 6 or Xiaomi - Watch S4?
Xiaomi - Watch S4 leads the current Mars Score by 1.3 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 Huawei - Watch GT 6 if…
Huawei - Watch GT 6 has the measurable edge on display size in.
Choose Xiaomi - Watch S4 if…
Xiaomi - Watch S4 has the measurable edge on peak brightness nits, weight g, 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 Huawei - Watch GT 6 wins
- ▲Display size — 2.80% more. 1.47 " vs 1.43 ".
Why Xiaomi - Watch S4 wins
- ▲Peak brightness — 46.67% more. 2200 nits vs 1500 nits.
- ▲Weight — 8.00 g less. 44 vs 52.
- ▲Battery life — 7.14% more. 360 h vs 336 h.
- ▲Has Cellular.
Spec comparison
Design
| Spec | Huawei - Watch GT 6 | Xiaomi - Watch S4 |
|---|---|---|
| Case size | 46 mm | 47 mmlead |
| Weight | 52 g | 44 glead |
| Case material | stainless-steel | stainless steel |
| Water resistanceⓘ | 5 ATM | 5 ATM |
Display
| Spec | Huawei - Watch GT 6 | Xiaomi - Watch S4 |
|---|---|---|
| Display size | 1.47 "lead | 1.43 " |
| Always-on display | true | true |
| Peak brightnessⓘ | 1500 nits | 2200 nitslead |
Health & Fitness
| Spec | Huawei - Watch GT 6 | Xiaomi - Watch S4 |
|---|---|---|
| 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 | Xiaomi - Watch S4 |
|---|---|---|
| Battery lifeⓘ | 336 h | 360 hlead |
| GPS | true | true |
| Cellular | false | truelead |
| NFC | true | true |
| OS | HarmonyOS | HyperOSlead |
Frequently asked
Which has longer battery life, Watch GT 6 or Watch S4?+
Watch S4 lasts 360 hours vs 336 hours.
Do Watch GT 6 or Watch S4 support ECG?+
Both support ECG.
Which has cellular, Watch GT 6 or Watch S4?+
Watch S4 offers a cellular variant; Watch GT 6 is Wi-Fi only.