Between the Charge 6 and Ring 4, the Charge 6 comes out ahead in gps, while the Ring 4 wins on battery life / water resistance. Overall, the Charge 6 scores 50.7 and the Ring 4 scores 52.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (50.7 vs 52.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Charge 6 if you care most about gps. The biggest gaps in its favor are gps.
Pick the Ring 4 if you care most about battery life / water resistance. Its strongest claims are battery life, water resistance.
Both ship with comparable sport modes, spo2, 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.
Why Google - Charge 6 wins
- ▲Has GPS.
Why Oura - Ring 4 wins
- ▲Battery life — 14.29% more. 8 days vs 7 days.
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
Spec comparison
Fitness
| Spec | Google - Charge 6 | Oura - Ring 4 |
|---|---|---|
| GPS | truelead | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 40 | 40 |
Battery
| Spec | Google - Charge 6 | Oura - Ring 4 |
|---|---|---|
| Battery life | 7 days | 8 dayslead |
| Water resistanceⓘ | 5 ATM | 10 ATMlead |
Design
| Spec | Google - Charge 6 | Oura - Ring 4 |
|---|---|---|
| Display size | 1.04 "lead | 0 " |
| Weight | 37 g | 3.3 glead |
Spec-level deep dives
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