Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Amazfit - Helio Ring | Garmin - Lily 2 |
|---|---|---|
| Sport modes | 0 | 20 |
| Water resistance | 10 ATM | 5 ATM |
Between the Helio Ring and Lily 2, the Helio Ring comes out ahead in water resistance, while the Lily 2 wins on sport modes. Overall, the Helio Ring scores 62 and the Lily 2 scores 64.2 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (62 vs 64.2). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
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 Lily 2 if you care most about sport modes. Its strongest claims are sport modes. The single most decisive one: Sport modes — 20.00 more. 20 vs 0.
Both ship with comparable battery life, 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 Garmin - Lily 2?
Garmin - Lily 2 leads the current Mars Score by 2.2 points.The more useful decision is the trade-off behind that result: compare the highlighted specifications 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 Garmin - Lily 2 if…
Garmin - Lily 2 has the measurable edge on 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 Garmin - Lily 2 wins
- ▲Sport modes — 20.00 more. 20 vs 0.
Spec comparison
Fitness
| Spec | Amazfit - Helio Ring | Garmin - Lily 2 |
|---|---|---|
| GPS | false | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 0 | 20lead |
Battery
| Spec | Amazfit - Helio Ring | Garmin - Lily 2 |
|---|---|---|
| Battery lifeⓘ | 5 days | 5 days |
| Water resistanceⓘ | 10 ATMlead | 5 ATM |
Design
| Spec | Amazfit - Helio Ring | Garmin - Lily 2 |
|---|---|---|
| Display size | 0 " | 1.0 "lead |
| Weight | 3.5 glead | 21 g |