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💍 Elevate your wellness game with the ring that knows you best.
The Oura Ring 4 Ceramic Midnight is a cutting-edge smart ring designed for 24/7 wear, crafted from durable zirconia ceramic with a sleek minimalist look. It tracks over 50 health metrics including sleep, heart rate, stress, and metabolic health using adaptive Smart Sensing technology. With up to 8 days of battery life and water resistance up to 100 meters, it offers seamless Bluetooth connectivity to iOS and Android devices, empowering professionals to optimize their health effortlessly.
| ASIN | B0FKQW8LTZ |
| Age Range Description | Adult |
| Band Colour | Midnight |
| Band Material Type | Ceramic |
| Battery Average Life | 5 days |
| Battery Capacity | 5000 |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 3,118 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 11 in Wearable Tech Rings |
| Box Contents | Oura Ring 4 Ceramic, Oura Ring 4 Charger, USB Cable |
| Brand Name | OURA |
| Case Material Type | Titanium |
| Cellular Technology | Not Supported |
| Colour | Midnight |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Android Devices, iOS Devices |
| Connectivity Technology | Bluetooth, USB |
| Controller Type | Proprietary |
| Country of Origin | Estonia |
| Customer Reviews | 4.5 4.5 out of 5 stars (762) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Buttons |
| Item Dimensions | 8 x 8 x 4 millimetres |
| Item Dimensions D x W x H | 4D x 8W x 4H millimetres |
| Item Weight | 4.3 Grams |
| Manufacturer | Oura |
| Memory Storage Capacity | 16 MB |
| Metrics Measured | Blood Oxygen (SpO2), Heart Rate, Sleep Duration, Stress |
| Model Name | Oura Ring 4 Ceramic Midnight - Size 8 |
| Model Number | JZ90-57455-08 |
| Operating System | Proprietäres Betriebssystem |
| Product Features | Schlafmonitor, Herzfrequenzmesser, Fitness-Tracker, Stressmonitor, Gesundheitsindex für Damen |
| Product Warranty | 3 year manufacturer warranty |
| RAM Memory Installed | 16 MB |
| Shape | Round |
| Sport Type | Multi-Sports |
| Style Name | Minimalist |
| Supported Application | Heart Rate Monitor |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Metres |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |
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