b.ring Pro adds skin temperature tracking to everything b.ring measures: sleep, heart rate, HRV, blood oxygen (SpO2), stress and activity. At 2.7 g, it is the thinnest and lightest b.ring. No subscription โ every feature is included.
| Material | Titanium |
| Colors | Black, Silver, Rose gold |
| Weight / thickness | 2.7 g / 2.55 mm (7.0 mm wide) |
| Water resistance | IP68 + 5ATM |
| Battery | Up to 7 days |
| Charging | Wireless charging dock, about 90 min |
| Sizes | US 7โ12 (see Size Guide) |
| Subscription | None โ $0/month |
| Warranty | 1 year |
What's the difference from b.ring G2? Pro is titanium, thinner and lighter (2.7 g), adds skin temperature, and charges on a wireless dock.
Do I need a subscription? No. All features are included with no monthly fee.
How do I choose my size? Ring sizes can't be exchanged after purchase, so we recommend the b.ring Sizing Kit ($4.99) first.
Still deciding? See b.ring G2 vs Pro: which smart ring and size to choose, or read what you get with a smart ring with no subscription.
