R08 Smart Ring – Heart Rate, Sleep & Blood Oxygen Health Tracker
Track Everything. Wear Nothing but a Ring.
The R08 Smart Ring packs serious health monitoring into a sleek, lightweight band you'll barely notice on your finger. Whether you're deep in a workout or sound asleep, it silently tracks what matters most — no screen, no bulk, no distractions.
Why You'll Love It
- Always-On Health Monitoring: Tracks heart rate, blood oxygen (SpO2), body temperature, and sleep quality continuously — day and night.
- Touch Control at Your Fingertip: A single tap controls your music, camera shutter, and phone navigation without ever pulling your phone out.
- Built for Any Condition: Fully waterproof design means you can swim, shower, or train in the rain without a second thought.
- Barely There, Always Ready: At just 3.7g, it's one of the lightest smart rings available. Available in sizes 7–13 in Black, Silver, and Gold.
- Works With What You Have: Compatible with Android 5.1+ and iOS 8.0+. No new ecosystem required.
Frequently Asked Questions
How do I find my ring size?
Use a flexible measuring tape or a strip of paper to measure the circumference of your finger in millimeters. Our sizes run from 7 (17.9mm) up to 13 (22.4mm). When in doubt, size up.
Is it really waterproof?
Yes — the R08 is fully waterproof and designed to be worn swimming and showering. Just avoid prolonged submersion beyond typical activity depth.
How long does the battery last?
Battery life varies by usage but typically lasts 3–5 days on a single charge. Sizes 10 and above use an 18mAh cell for extended runtime.
Does it work without a phone nearby?
The ring collects health data on its own and syncs to the app when your phone is in range. You won't lose any data if you're out of Bluetooth range.
Which app does it use?
The R08 connects via Bluetooth to a companion app available on both the App Store (iOS 8.0+) and Google Play (Android 5.1+).
