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💍 Own your health, silently and stylishly.
The Oura Ring 4 is a sleek, all-titanium smart ring designed for professionals who demand precise health tracking without distraction. It monitors over 50 health metrics including sleep, activity, stress, and women’s health, powered by adaptive Smart Sensing technology. With up to 8 days of battery life, water resistance to 100 meters, and multi-ring style options controlled via the app, it blends cutting-edge biometric monitoring with effortless, elegant wearability.
| ASIN | B0D9WV7R98 |
| Additional Features | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Age Range Description | Adult |
| Band Color | Black |
| Band Material Type | Stainless Steel |
| Battery Average Life | 5 days |
| Battery Capacity | 8 days |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | #267 in Electronics ( See Top 100 in Electronics ) #3 in Smart Rings |
| Brand | OURA |
| Built-In Media | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Case Material Type | Stainless Steel |
| Closure Type | Slip On |
| Color | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Android Devices, iOS Devices |
| Connectivity Technology | Bluetooth |
| Controller Type | Ring |
| Customer Reviews | 4.0 out of 5 stars 9,179 Reviews |
| Display Type | No Display |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Human Interface Input | Unknown |
| Item Dimensions | 0.98 x 0.98 x 0.31 inches |
| Item Dimensions D x W x H | 0.98"D x 0.98"W x 0.31"H |
| Manufacturer | Oura |
| Metrics Measured | Body Temperature, Menstrual Cycle, Sleep Duration, Stress |
| Model Name | JZ90-54217-15 |
| Model Number | JZ90-54217-15 |
| Operating System | Proprietary/Custom |
| Shape | Round |
| Sim Card Size | eSIM |
| Special Feature | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Style Name | Metallic |
| Supported Application | Fitness Tracker |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Standard |
| Water Resistance Depth | 100 meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP54 |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
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