Between the Gen 2 Smart Ring and Smart Band 9, the Gen 2 Smart Ring comes out ahead in water resistance, while the Smart Band 9 wins on sport modes and battery life. Overall, the Gen 2 Smart Ring scores 57.2 and the Smart Band 9 scores 78.8 on our Mars Score.
Which should you buy?
The Smart Band 9 is the clear pick on raw spec strength, leading by 21.6 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Gen 2 Smart Ring if you care most about water resistance. The biggest gaps in its favor are water resistance.
Pick the Smart Band 9 if you care most about sport modes and battery life. Its strongest claims are sport modes, battery life.
Both ship with comparable gps, spo2, so those specs don't separate the two — focus on the differences below.
Bottom line: the Smart Band 9 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why RingConn - Gen 2 Smart Ring wins
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
Why Xiaomi - Smart Band 9 wins
- ▲Sport modes — 140.00 more. 150 vs 10.
- ▲Battery life — 110.00% more. 21 days vs 10 days.
Spec comparison
Fitness
| Spec | RingConn - Gen 2 Smart Ring | Xiaomi - Smart Band 9 |
|---|---|---|
| GPS | false | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 10 | 150lead |
Battery
| Spec | RingConn - Gen 2 Smart Ring | Xiaomi - Smart Band 9 |
|---|---|---|
| Battery life | 10 days | 21 dayslead |
| Water resistanceⓘ | 10 ATMlead | 5 ATM |
Design
| Spec | RingConn - Gen 2 Smart Ring | Xiaomi - Smart Band 9 |
|---|---|---|
| Display size | 0 " | 1.62 "lead |
| Weight | 2.5 glead | 16 g |
Frequently asked
Spec-level deep dives
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