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The Oura Ring 4 Stealth is a cutting-edge smart ring designed for professionals seeking precise health insights. Featuring continuous heart rate monitoring, advanced sleep and stress tracking, and up to 8 days of battery life, it offers a seamless blend of style and functionality in a uniquely sized, lightweight form factor.

| Brand | OURA |
| Manufacturer | Oura |
| Model | JZ90-54218-10 |
| Product Dimensions | 2.4 x 2.4 x 0.8 cm; 181 g |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Item model number | JZ90-54218-10 |
| Special Features | Sleep Monitor, Heart Rate Monitor, Activity Tracker, Stress Monitor |
| Mounting Hardware | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Number of items | 1 |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Battery cell composition | Lithium Polymer |
| Wireless Type | Bluetooth |
| Device interface - primary | Touchscreen |
| Includes Rechargeable Battery | Yes |
| Manufacturer | Oura |
| Item Weight | 181 g |
E**A
D**A
Delivery took longer than expected, but i am happy with the ring. It does exactly what they advertise. Its a nice to have.
M**D
I hesitated for a while before investing in this gadget. And I love my Gadgets! but after doing some homework on the competition, I decided to jump for it. First, the fit and metal colour are great, I couldn't be happier, the quality and durability is insane, i do everything with it, I rarely take it off. The connectivity to my Samsung Z Fold6 was flawless, no hiccups, plus, everything you open the app, it updates in no time. so great compatibility. Now, you need to give it time to gather data about you, of course... it will not happen overnight which is quite right, but the intel you get afterwards is great. Your body age, sleep quality, energy available, your stress, it is such a great little ring. it is a lot of money for such a small device but the value for money is worth it. I highly recommend it if you are curious and want to be nudge in the right direction for better health.
U**A
Najlepszy tracker samopoczucia i dobrostanu
C**L
I’ve only used it for a week so I haven’t gotten the full insights it can offer, but the Oura ring 4 has been great so far. I bought it primarily to track my sleep, and it’s fascinating to track the quality of my sleep each night.
Trustpilot
2 weeks ago
4 days ago