Between the vivosmart 5 and Ring 4, the vivosmart 5 comes out ahead in several specs, while the Ring 4 wins on sport modes and battery life. Overall, the vivosmart 5 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 isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
The vivosmart 5 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the Ring 4 if you care most about sport modes and battery life. Its strongest claims are sport modes, battery life, water resistance.
Both ship with comparable gps, spo2, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Garmin - vivosmart 5 wins
- No decisive advantages.
Why Oura - Ring 4 wins
- ▲Sport modes — 26.00 more. 40 vs 14.
- ▲Battery life — 14.29% more. 8 days vs 7 days.
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
Spec comparison
Fitness
| Spec | Garmin - vivosmart 5 | Oura - Ring 4 |
|---|---|---|
| GPS | false | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 14 | 40lead |
Battery
| Spec | Garmin - vivosmart 5 | Oura - Ring 4 |
|---|---|---|
| Battery life | 7 days | 8 dayslead |
| Water resistanceⓘ | 5 ATM | 10 ATMlead |
Design
| Spec | Garmin - vivosmart 5 | Oura - Ring 4 |
|---|---|---|
| Display size | 0.73 "lead | 0 " |
| Weight | 26 g | 3.3 glead |
Frequently asked
Spec-level deep dives
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