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Oura JZ90-54217-11 Smart Ring: Sleep tracking wearable

Meet the Oura Ring 4 – it's not just a smart ring, it's like having a mini health lab wrapped around your finger. This bad boy comes in a sleek all-titanium design that's tougher than your last gym session. Thanks to Smart Sensing, it's got this uncanny ability to learn your rhythms, dishing out insights on everything from how well you slept to whether you're stressing over nothing (again). And with battery life that laughs in the face of your smartphone's pitiful endurance, you might just forget you're wearing it – until it tells you to take a breather.

Here’s the lowdown on what makes it tick:

  • It’s like the Oura Ring 3 went to the gym, got a PhD, and came back looking sharp.
  • Built to survive your 24/7 hustle, because let’s face it, you’re not taking it off.
  • Water-resistant and kind to your skin, because comfort shouldn’t be an afterthought.
  • Plays nice with over 40 apps (Apple Health and Google Health Connect are in its social circle).
  • And yes, your HSA/FSA can cover the ring, chargers, and even shipping – because health is wealth, right?

Heads up: Don’t skip the Oura Ring 4 Sizing Kit. Trust us, getting the right fit is the difference between 'this is amazing' and 'why did I not listen?'

Features
  • Heart rate monitor
  • Fitness tracker
  • Up to 8 days of battery life
  • Smart Sensing technology
  • 24/7 wear design
  • Water resistant
  • Sync with favorite apps
  • HSA/FSA eligible
  • Sleep tracking wearable

General specs

  • Brand: Oura
  • Model: JZ90-54217-11
  • Seller: Amazon
  • ID: B0D9WW49PJ
  • product_dimensions: 1.1 x 1.1 x 0.28 inches
  • item_weight: 7 ounces
  • batteries: 1 Lithium Polymer batteries required. (included)
  • other_display_features: Wireless
  • whats_in_the_box: Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide
  • manufacturer: Oura
  • country_of_origin: Estonia
  • date_first_available: October 3, 2024
  • First listed by seller: 5/29/25

If you are interested in more details, you can find full information on the seller's page.

Amazon Buy on Amazon #publicidad
$349.00
Last price update: 12/6/25
Available to order
Price History for seller Amazon

Shipping options

Delivery to United States
Available

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Brand Oura Oura Oura Oura Oura POBOVi
Model JZ90-54217-11 JZ90-1003-06 JZ90-1003-09 JZ90-1003-08 JZ90-54218-11 Ring OnePlus
Color
Rating
(2)
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(2)
(1)
(2)
(3)
Price $349.00 $299.91 $279.00 $214.26 $399.00 $119.00
Seller Amazon Amazon Amazon Amazon Amazon Amazon
Update December 6, 2025 December 6, 2025 December 6, 2025 December 6, 2025 December 6, 2025 December 6, 2025
item_weight 7 ounces 6.3 ounces 0.25 Pounds
country_of_origin Estonia Estonia China
Product Dimensions 1.1 x 1.1 x 0.28 inches 0.94 x 0.94 x 0.28 inches 0.91 x 0.91 x 0.28 inches
Item Weight 7.8 ounces 7.8 ounces 8 ounces
Batteries 1 Lithium Ion batteries required. (included) 1 Lithium Ion batteries required. (included) 1 Lithium Ion batteries required. (included)
Other Display Features Wireless Wireless Wireless
Department unisex-adult unisex-adult unisex-adult
Manufacturer Oura Oura Oura
Country of Origin Estonia Estonia Estonia
Date First Available January 19, 2024 January 19, 2024 January 19, 2024

Smart Ring

$349.00

Reviews

4.5
(2 reviews)
5
1
4
0
3
0
2
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1
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Isabella Lewis
Isabella L. GB Birmingham
June 6, 2025
Decision:
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