Compare models
Which ring is yours?
All three series share the same sensor array and the same app. The difference is shape, finish and fit — so we ask about those instead of printing a spec sheet that tells you the cheap one does the same job.
Four questions
Answer these and the series picks itself
How do you want it to feel?
What is your ring size?
What matters more?
Have you worn a ring before?
Our recommendation
If your size is US 7 or below, take Slim — the full-width band will feel bulky on a small finger. If you are US 8 or above and want the most surface to read, take Signature. Choose Ceramic only if the look is the priority; it is not on sale yet.
Parameter comparison
The full table
| Signature | Slim | Ceramic | |
|---|---|---|---|
| Width | 8 mm | 6.5 mm | 8 mm |
| Thickness | 2.7 mm | 2.5 mm | 2.6 mm |
| Battery | 5-7 days | 5-7 days | 5-7 days |
| Sizes | US 6–13 | US 6–13 | US 6–13 |
| Finish | Brushed titanium/ Polished titanium | Polished titanium | Polished ceramic |
| Weight | 5g | 3g | 4g |
| Finish | Brushed titanium/ Polished titanium | Polished titanium | Polished ceramic |
| Water resistance | 5ATM / IP68 | 5ATM / IP68 | 5ATM / IP68 |
| Charging | Magnetic charging / charging case | Magnetic charging / charging case | Magnetic charging / charging case |
| Main controller | Goodix 5331 | Bluetrum AB2056D | Goodix 5331 |
| PPG sensor | HX3918 | HX3918 | HX3918 |
| Bluetooth | BLE 5.3 | BLE 5.2 | BLE 5.2 |
| Health tracking | Heart rate, HRV, SpO₂, stress, sleep, activity, cycle insights, meditation | Heart rate, HRV, SpO₂, stress, sleep, activity, cycle insights | Heart rate, HRV, SpO₂, stress, sleep, activity, cycle insights,AI |
| Sports modes | 128 standard + 5 GPS-linked modes | 128 standard + 5 GPS-linked modes | 128 standard + 5 GPS-linked modes |
| Apple Health | Apple Health + Strava listed | Apple Health + Strava listed | Apple Health + Strava listed |
| App | Da Rings | OWRing | OWRing |
| Price | $49.99 | $49.99 | $49.99 |
