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📏 Find your perfect fit before you commit — because guessing isn’t an option.
The Oura Ring 4 Sizing Kit is a precision tool designed to help you find the exact fit for the Oura Ring 4, which uses unique sizing different from standard rings. By wearing the sizing kit for at least 24 hours, users can ensure optimal comfort and data accuracy. The kit works on any finger and includes a $10 credit toward the purchase of the actual ring, making it a smart, time-saving step to avoid sizing errors and delays.
| ASIN | B0D9WVWXR1 |
| Additional Features | Heart Rate Monitor, Activity Tracker, Sleep Monitor |
| Band Material Type | Stainless Steel |
| Best Sellers Rank | #61 in Electronics ( See Top 100 in Electronics ) #1 in Smart Rings |
| Brand | OURA |
| Built-In Media | Oura Ring 4 Sizing Kit |
| Closure Type | Push Back |
| Color | Sizing Kit |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Customer Reviews | 4.5 out of 5 stars 3,815 Reviews |
| Display Type | No Display |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate, Sleep Duration |
| Model Number | JZ98-54870 |
| Shape | Round |
| Special Feature | Heart Rate Monitor, Activity Tracker, Sleep Monitor |
| Style | Sizing Kit |
| Style Name | Sizing Kit |
| Supported Application | Fitness Tracker, Sleep Monitor |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
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