Understand your nights.
See sleep stages and a daily Sleep Score, then look at what contributed to your rest.
10% off either
Ultrahuman ring.
Sleep, recovery and movement insights with no mandatory subscription for ring data. Use KRISTDURO for 10% off AIR or PRO.
YOUR CHECKOUT CODEKRISTDURO
LIGHTER EVERYDAY WEAR
Ring AIR
4–6 days
The lighter, lower priced way to track sleep, recovery and movement.
No monthly fee to access ring data
REFERENCE PRICE€379
WITH 10% CODE€341.10Save €37.90
LONGER BETWEEN CHARGES
Ring PRO
Up to 15 days
More battery life, a redesigned sensor and an included charging case.
No monthly fee to access ring data
REFERENCE PRICE€499
WITH 10% CODE€449.10Save €49.90
Prices use the listed euro reference prices and the 10% code alone. Confirm your final price at checkout. Duuro may earn a commission from either link.
Which ring fits
your life?
Both bring sleep, recovery and movement insights to the Ultrahuman app. The biggest differences are how long they last, how they charge and how light they feel.
| AT A GLANCE | RING AIR | RING PRO |
|---|---|---|
| Ring battery | 4–6 days | Up to 15 days ~12 days in Turbo Mode |
| Weight | 2.4–3.6 g | 3.3–4.8 g |
| Charging | Standard charging pad | Included PRO case Up to 45 days of case battery |
| On-ring data storage | About 4 days | Up to 250 days |
| Subscription for ring data | Not required | Not required |
| Heart-rate sensor | PPG | Redesigned PPG |
| Sizes / water resistance | 5–14 / up to 100 m | 5–14 / up to 100 m |
Choose AIR for a lighter ring and a lower starting price.
Choose PRO for longer battery life and a travel ready charging case.
The insight is
in the everyday.
AIR and PRO collect trends while you sleep and move, without a screen competing for your attention.
Read your readiness.
Heart rate variability, resting heart rate and skin temperature help show how your body is responding.
See the whole day.
Track steps and activity alongside sleep and recovery, beyond a single workout.
Find your rhythm.
Circadian and caffeine timing insights connect daily habits with the next night.
THE HARDWARE
A closer look at both rings.
Ring AIR
LIGHTER DAILY WEAR- Build
- Titanium outer shell, tungsten carbide carbon coating and hypoallergenic epoxy resin inner lining
- Size & weight
- Whole sizes 5–14; 2.4–3.6 g by size; 8.1 mm wide and 2.45–2.8 mm thick
- Sensors
- Infrared PPG, skin temperature and 6-axis motion, with red, green and infrared LEDs
- Battery & charging
- 4–6 days per charge; about 180 minutes for a full charge; standard charging pad
- Connectivity
- Bluetooth Low Energy 5; iOS 15+ and Android 6+
- Water resistance
- Up to 100 metres for up to 12 hours, per Ultrahuman
Ring PRO
LONGER BATTERY LIFE- Build
- Titanium unibody
- Size & weight
- Whole sizes 5–14; 3.3–4.8 g by size
- Sensors
- Redesigned PPG heart-rate sensor
- Battery & charging
- Up to 15 days on the ring, around 12 in Turbo Mode; included PRO case with up to 45 days of case battery
- Connectivity
- Bluetooth Low Energy 5.3; up to 250 days of on-ring data storage
- Water resistance
- Up to 100 metres, per Ultrahuman
QUICK ANSWERS
Good to know before you buy.
What is the Ultrahuman Ring AIR discount code?
Enter KRISTDURO at checkout after opening Duuro's Ultrahuman affiliate link. The code gives 10% off the eligible Ring AIR price. Confirm the discount before you place your order.
Does KRISTDURO work on Ultrahuman Ring PRO?
Yes. Use the separate Ring PRO link on this page and enter KRISTDURO at checkout for 10% off the eligible PRO price. At a €499 reference price, that is €49.90 off, bringing the ring to €449.10 before any taxes, shipping or other adjustments. Confirm the final discount in the store.
Should I choose Ring AIR or Ring PRO?
Choose Ring AIR if you prefer the lighter, lower-priced ring for sleep, recovery and movement tracking. Choose Ring PRO if longer battery life, the included charging case, larger on-ring storage and its redesigned heart-rate sensor matter more to you. Both use Ultrahuman's app, come in sizes 5–14 and list 100-metre water resistance.
Do Ultrahuman Ring AIR and Ring PRO need a subscription?
No. Ultrahuman says neither Ring AIR nor Ring PRO has a recurring subscription fee to access ring data. You can use the rings' core tracking without a required monthly data plan. Optional paid services or add-ons may have separate terms.
What does Ultrahuman Ring AIR track?
Ring AIR tracks sleep, recovery, movement, heart rate, heart rate variability and skin temperature. The Ultrahuman app turns those readings into trends and guidance. It is a wellness wearable, not a medical diagnosis device.
How long does the battery last, and is the ring waterproof?
Ultrahuman specifies 4 to 6 days of battery life and about 180 minutes for a full charge. It lists water resistance up to 100 metres for up to 12 hours. Real battery life depends on use and settings.
How do I choose the right size?
Ultrahuman recommends its sizing kit. Ring AIR comes in whole sizes 5 through 14; its sizing can differ from standard US ring sizes, and there are no half sizes.
Ready to find
your ring?
Use KRISTDURO for 10% off either model. No mandatory subscription to access your ring data.