Ceramic Smart Ring — Heart Rate, SpO2 & Sleep Tracker (No Subscription)

A health tracker you actually forget you're wearing. The Ceramic Smart Ring reads your heart rate, blood oxygen and sleep through the night, then syncs it all to your phone in the morning — no monthly fee, ever.

What it tracks

• Heart rate — continuous, day and night
• Blood oxygen (SpO2) — spot checks and overnight trends
• Sleep — duration, stages and a nightly sleep score
• Daily activity — steps and calories

Also does this

Remote camera shutter. Pair the ring to your phone and it doubles as a shutter button — set the phone down, step back and take the photo with a tap on your finger. Handy for group shots and anything you'd otherwise need a timer for.

Why a ring instead of a watch

• Ceramic and titanium shell — scratch-resistant, polished finish that reads as jewellery, not gadget
• Multi-day battery life from a quick top-up on the magnetic dock
• Weighs almost nothing, so it doesn't wake you the way a watch does
• No screen buzzing at you — the data lives in the app

No subscription

Comparable rings from the big brands run $199–$349, and Oura charges $5.99 a month — $69.99 a year — on top of that just to see your own health stats. This one is $79.99, once. Every metric, every report, forever, with no account fee of any kind.

Specifications

• Charge time: 1.5 hours to full
• Battery life: 5–7 days per charge
• Charging: Included magnetic charging case

Find your size

Rings are sized by the inside circumference of your finger. Measure before you order — a smart ring must sit snug to read your data correctly.

1. Wrap a thin, non-stretch string or strip of paper around the base of the finger you'll wear it on.
2. Mark where the ends meet, straighten the string against a ruler, and read the length in millimetres.
3. Match that number to the Inner circumference column below. If you're between two sizes, choose the larger one.

Fingers swell in heat and shrink in cold — measure at the end of the day for the most reliable fit.

Good to know

Take the ring off before swimming, bathing or showering, and before any activity that submerges your hand. We'll publish a confirmed water-resistance rating once we have it in writing from the manufacturer — until then, treat it as a device to keep dry.

In the box

• Ceramic Smart Ring
• Magnetic charging dock
• USB-C charging cable
• Quick-start guide

Shipping & returns

• Delivery to US addresses in 8-12 business days
• Tracking number emailed the moment your order ships
• 30-day returns — see our return policy

Not sure which smart ring to buy? Read our comparison of the best smart rings with no subscription.