Amazfit - Helio Ring vs Coros - PACE 3 (as fitness tracker)
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Amazfit - Helio Ring | Coros - PACE 3 (as fitness tracker) |
|---|---|---|
| Battery life | 5 days | 17 days |
| Sport modes | 0 | 20 |
| Water resistance | 10 ATM | 5 ATM |
| GPS | false | true |
Between the Helio Ring and PACE 3 (as fitness tracker), the Helio Ring comes out ahead in water resistance, while the PACE 3 (as fitness tracker) wins on battery life / sport modes. Overall, the Helio Ring scores 62 and the PACE 3 (as fitness tracker) scores 83.2 on our Mars Score.
Which should you buy?
The PACE 3 (as fitness tracker) is the clear pick on raw spec strength, leading by 21.2 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 Helio Ring if you care most about water resistance. The biggest gaps in its favor are water resistance. The single most decisive one: Water resistance — 5.00 ATM more. 10 vs 5.
Pick the PACE 3 (as fitness tracker) if you care most about battery life / sport modes. Its strongest claims are battery life, sport modes, gps. The single most decisive one: Battery life — 240.00% more. 17 days vs 5 days.
Both ship with comparable spo2, so those specs do not separate the two — focus on the differences below.
Bottom line: the PACE 3 (as fitness tracker) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Amazfit - Helio Ring or Coros - PACE 3 (as fitness tracker)?
Coros - PACE 3 (as fitness tracker) leads the current Mars Score by 21.2 points.The more useful decision is the trade-off behind that result: compare battery life, gps against the way you will actually use the product.
Choose Amazfit - Helio Ring if…
Amazfit - Helio Ring has the measurable edge on water resistance atm.
Choose Coros - PACE 3 (as fitness tracker) if…
Coros - PACE 3 (as fitness tracker) has the measurable edge on battery days, sport modes, has gps.
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 Amazfit - Helio Ring wins
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
Why Coros - PACE 3 (as fitness tracker) wins
- ▲Battery life — 240.00% more. 17 days vs 5 days.
- ▲Sport modes — 20.00 more. 20 vs 0.
- ▲Has GPS.
Spec comparison
Fitness
| Spec | Amazfit - Helio Ring | Coros - PACE 3 (as fitness tracker) |
|---|---|---|
| Form factor | Ringlead | Watch |
| GPS | false | truelead |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 0 | 20lead |
Battery
| Spec | Amazfit - Helio Ring | Coros - PACE 3 (as fitness tracker) |
|---|---|---|
| Battery lifeⓘ | 5 days | 17 dayslead |
| Water resistanceⓘ | 10 ATMlead | 5 ATM |
Design
| Spec | Amazfit - Helio Ring | Coros - PACE 3 (as fitness tracker) |
|---|---|---|
| Display size | 0 " | 1.2 "lead |
| Weight | 3.5 glead | 39 g |