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CIRCA Smart Ring — Heart Rate, SpO2 & Sleep Tracking (Charging Case Included)
Black / 7
$69.99
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CIRCA Smart Ring — Heart Rate, SpO2 & Sleep Tracking (Charging Case Included)
$69.99
✓ Free shipping · ✓ 30-day returns · ✓ 12-month warranty
Ships in 1 to 3 days · delivered in 8 to 15 days (US)
CIRCA is a screen-free health tracker you wear as a ring. It reads heart rate and blood oxygen, tracks sleep, and counts steps, distance and calories, all synced to the free QRing app over Bluetooth.
- Heart rate and SpO2 in real time
- Sleep duration and quality, every morning
- Steps, distance and calories all day
- 2.9 g, 6.8 mm, no screen, no strap
- Up to 10 days per charge (maker rated), portable charging case included
- Works with iOS 8.0+ and Android 5.1+
- Remote camera shutter for your phone
In the box: CIRCA ring, portable charging case, USB charging cable, user manual.
Sizing: US sizes 7 to 13. Between sizes? Go up one. See the size guide.
Not a medical device. Readings are for general wellness and fitness only. Not rated for water: remove before showering or swimming.
01 — Sleep
Track sleep without a watch on your wrist
Wrist wearables are bulky at night, so they come off, and the data stops. CIRCA is a plain band that stays on. Every morning the app shows how long and how well you slept.
02 — Activity
Steps, distance, calories. Automatically.
It counts steps and estimates distance and calories all day, and reads your heart rate in real time whenever you check in. No buttons, no starting a workout.
04 — Battery
Up to 10 days, plus a case that recharges it anywhere
The maker rates a full charge at up to 10 days. Drop the ring in the included charging case to top it up, then charge the case over USB.
The honest comparison
Everything a wrist wearable tracks. Nothing on your wrist.
What is in the box
Everything you need to start tonight.
- CIRCA smart ring, in your finish and size
- Portable charging case
- USB charging cable
- User manual
- 12-month warranty, registered to your order
Questions, answered.
How do I find my size?
US sizes 7 to 13. Measure the inside of a ring you already wear on the same finger and match it to the size guide. Between sizes? Go up one. The ring should pass the knuckle with slight resistance.
Which phones does it work with?
iPhones on iOS 8.0 or later and Android phones on 5.1 or later, over Bluetooth, through the free QRing app.
How long does the battery last?
The maker rates a full charge at up to 10 days. The charging case in the box tops the ring up on the go, and the case charges over the included USB cable.
Can I shower or swim with it?
It is not rated for water by the maker, so take it off before showering, swimming or washing up.
Is this a medical device?
No. Heart rate, blood oxygen, sleep and activity readings are for general wellness and fitness, not for diagnosis or treatment.
What if it does not fit or I do not like it?
30 days, send it back, full refund. Plus a 12-month warranty against defects.
Something else? Read the full FAQ or get in touch.
Health tracking that disappears.
A ring, an app, and up to 10 days between charges. Free shipping, 30-day returns, 12-month warranty.