Circular
Circular Ring 2
$379
Released 2025-08
Best Smart Rings · head-to-head
Circular Ring 2 vs Amazfit Helio Ring
A sourced, side-by-side comparison. Amazfit Helio Ring is cheaper at $149.99. Every spec and price links to its source.
Amazfit
Amazfit Helio Ring
$149.99Cheaper
Released 2024-05
Which is better: the Circular Ring 2 or Amazfit Helio Ring?
On the specs we track, they're closely matched. The Amazfit Helio Ring is the cheaper at $149.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Circular Ring 2 | Amazfit Helio Ring |
|---|---|---|
| US price | $379 | $149.99 |
| Brand | Circular | Amazfit |
| Released | 2025-08 | 2024-05 |
| Material | Titanium (PVD coating on premium finishes) | Titanium alloy outer, resin inner |
| Weight (g) | 3 | 3.65-3.82 |
| Battery days | 8 | 4 |
| Spo2 | Yes | Yes |
| Temperature sensor | Yes | Yes |
| Ecg | Yes | No |
| Subscription required | No | No |
| Water resistance (m) | — | 100 |
Sources — Circular Ring 2: shop.circular.xyz (verified 2026-06-15). Amazfit Helio Ring: us.amazfit.com (verified 2026-06-15).
What's the difference between the Circular Ring 2 and Amazfit Helio Ring?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Material: Circular Ring 2 Titanium (PVD coating on premium finishes) vs Amazfit Helio Ring Titanium alloy outer, resin inner
- Weight (g): Circular Ring 2 3 vs Amazfit Helio Ring 3.65-3.82
- Battery days: Circular Ring 2 8 vs Amazfit Helio Ring 4
- Ecg: Circular Ring 2 true vs Amazfit Helio Ring false