RingConn Gen 2 vs Circular Ring Slim
RingConn Gen 2 ($279) vs Circular Ring Slim ($259) — side-by-side specs, weight, pros and cons to help you pick the right smart ring.
Spec-by-spec
| Spec | RingConn Gen 2 | Circular Ring Slim |
|---|
| Price | $279 | $259 |
| Weight | 3g | 4g |
| Battery | 12 days | 4–5 days |
| Sensors | HR, HRV, SpO2, Temp, Accel | PPG, ECG, Temp, SpO2 |
| Material | Titanium | Titanium |
| Sub | None (free forever) | Optional (Kira AI) |
| WR | 5ATM | 5ATM |
| Weight | 3–5g | 3.8g |
Pros & Cons
RingConn Gen 2
- 12-day battery class-leading
- No subscription ever
- Full sleep staging + HRV
- 5ATM water resistance
- Five titanium color options
- Smaller app ecosystem than Oura
- Brand less established
- No ECG
Circular Ring Slim
- ECG detection unique in this price
- No subscription base tier
- Kira AI coaching
- Slim 2mm profile
- 5ATM waterproof
- ECG not FDA-cleared
- Smaller company = support risk
- Kira AI coaching behind paywall
Circular Ring Slim is the better value at $259. If weight matters most, RingConn Gen 2 carries lighter at 3g. Both are part of our curated smart ring index — tap through to check current pricing.