Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Amazfit - Helio Ring | Google - Inspire 3 |
|---|---|---|
| Battery life | 5 days | 10 days |
| Sport modes | 0 | 21 |
| Water resistance | 10 ATM | 5 ATM |
Between the Helio Ring and Inspire 3, the Helio Ring comes out ahead in water resistance, while the Inspire 3 wins on battery life / sport modes. Overall, the Helio Ring scores 62 and the Inspire 3 scores 66.4 on our Mars Score.
Which should you buy?
The Inspire 3 edges ahead on the Mars Score (62 vs 66.4), but the 4.4-point gap is small enough that the right pick comes down to which spec advantages matter to you.
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 Inspire 3 if you care most about battery life / sport modes. Its strongest claims are battery life, sport modes. The single most decisive one: Battery life — 100.00% more. 10 days vs 5 days.
Both ship with comparable gps, 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.
Which should you buy: Amazfit - Helio Ring or Google - Inspire 3?
Google - Inspire 3 leads the current Mars Score by 4.4 points.The more useful decision is the trade-off behind that result: compare battery life 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 Google - Inspire 3 if…
Google - Inspire 3 has the measurable edge on battery days, sport modes.
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 Google - Inspire 3 wins
- ▲Battery life — 100.00% more. 10 days vs 5 days.
- ▲Sport modes — 21.00 more. 21 vs 0.
Spec comparison
Fitness
| Spec | Amazfit - Helio Ring | Google - Inspire 3 |
|---|---|---|
| GPS | false | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 0 | 21lead |
Battery
| Spec | Amazfit - Helio Ring | Google - Inspire 3 |
|---|---|---|
| Battery lifeⓘ | 5 days | 10 dayslead |
| Water resistanceⓘ | 10 ATMlead | 5 ATM |
Design
| Spec | Amazfit - Helio Ring | Google - Inspire 3 |
|---|---|---|
| Display size | 0 " | 0.74 "lead |
| Weight | 3.5 glead | 21 g |