
Built to Disappear.
A titanium-grade steel ring that reads your heart rate, sleep, and recovery around the clock — light enough that you forget it's there.

XEILO — Refined Design
Wrap a strip of paper around your finger, mark where it overlaps, and match the length in mm to “Circumference” below — or measure a ring you already own that fits well.
| Size 8 | 18.2mm diameter · 57.2mm circumference |
| Size 9 | 19.0mm diameter · 59.5mm circumference |
| Size 10 | 19.8mm diameter · 62.1mm circumference |
| Size 11 | 20.6mm diameter · 64.6mm circumference |
| Size 12 | 21.4mm diameter · 67.2mm circumference |
| Size 13 | 22.2mm diameter · 69.7mm circumference |
No forms, no typing — just double-click and pay at checkout on supported devices.

A titanium-grade steel ring that reads your heart rate, sleep, and recovery around the clock — light enough that you forget it's there.

An optical heart-rate sensor, a temperature sensor, and a motion sensor, all wired to a single low-power Bluetooth chip — reading your body around the clock without a single extra part.
Waterproof Rating
Swim, shower, or sweat — rated to 50 meters.
Days of Battery
With the included charging case, 13 extra charges on the go.
One Price
No subscription. No hidden fees. Ever.

While you were sleeping, your ring was working — heart rate, recovery, and sleep stages, ready before your first cup of coffee.
Material
Stainless steel, concave design — about 20% lighter than the previous generation
Colors
Black, Gold — sizes 8 to 13
Battery
15–18mAh lithium polymer · up to 39 days per charge, up to 60 days with the charging case
Charging
Magnetic charging cable, included
Waterproofing
IP68 & 5ATM — swim, shower, and sweat resistant
Sensors
Optical heart rate, temperature, and motion sensors
Connectivity
Bluetooth 5.2 BLE
Compatibility
iOS 8.0+, Android 5.1+ — QRing app, 33 languages
"Super fast, packed really well, everything was perfect. I ordered the smallest size and it fits me perfectly. Works great and the app is super easy to use. The gold color is beautiful, and the battery life is excellent too."
"After a day of use, very satisfied. Super easy to connect, and the app is very intuitive. Sizing was spot on, and the black finish looks great."
"Ordered my usual ring size and it fits perfectly and works flawlessly. Really happy with this purchase."