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  • Size: 04-15
  • Step 1: Try on Multiple Sizes
  • Step 2: Wear for 24 Hours
  • Step 3: Find Your Most Comfortable Fit

Specifications

  • Product Category

    • Ideal For

    • Unisex

    • Wearable Device Type

    • Sizing Kit

    • Compatible Devices

    • Not Applicable

    • Manufacturer Details

      • Brand

      • Oura

      • Model Series

      • Ring 4

      • Model Number

      • JZ98-54867

    • Product Dimensions (Open)

      • Dimensions In CM (WxDxH)

      • 00

        • Dimensions In Inches (WxDxH)

        • 00

      • Features & Functions

        • Health Tracker

        • Not Applicable

        • Features

        • Not Applicable

        • Compatible OS

        • Not Applicable

        • Touch Controls

        • No

      • Physical Attributes

        • Ring Size

        • 4

      • Network Connectivity

        • Bluetooth Specifications

        • Not Applicable

        • Bluetooth Supported

        • No

        • Wi-Fi Supported

        • No

      • Battery Details

        • Charging

          • Wireless Charging Options

          • No

        • Materials & Durability

          • Body Material

          • Not Applicable

        • Aesthetics

          • Brand Color

          • White

          • Color

          • WHITE

        • In The Box

          • Documents

          • 1 x Warranty Card

          • Main product

          • Sizing Kit

            • Package Includes

            • 1 x Sizing Kit, 1 x Warranty Card

            • Generic Name

            • Wearable Device Accessory

          • Packaged Dimensions

          • After Sales & Services

            • Warranty on Main Product

            • 24 Months

            • Warranty Type

            • Carry-In

            • Standard Warranty Includes

            • Manufacturing Defects

            • Standard Warranty Excludes

            • Physical Damage

              • Installation & Demo applicable

              • No

            • Certification

              • Additional Certifications

              • FCC Certified

            • Company Contact Information

              • Customer Support Number

              • 18005727662

              • Customer Support Email

              • customersupport@croma.com

              • Manufacturer/Importer/Marketer Name & Address

              • Manufacturer Name & Address: Valdmae poik 3, Tanassilma,76406 Saku vald, Estonia | Importer Name & Address: RASHI PERIPHERALS LIMITED Rashi Complex, Bldg.No.1,1A, 2 & 3, Survey No.186, Poman, Dist: Palghar, Maharashtra - 401208

              • Country of Origin

              • Estonia

              • Country of Brand Origin

              • Finland

            • Croma Service Promise

              • Customer Support Email

              • customersupport@croma.com

              • Registered Name and Address

              • Infiniti Retail Ltd. - Unit No. 701 & 702, 7th Floor, Kaledonia, Sahar Road, Andheri (East); Mumbai - 400069. India

              • Customer Support Number

              • 1800 572 7662

              • Customer Care Contact Person

              • Grievance Officer

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            Overview

            Precise Size Selection

            Created to help you determine the correct fit before purchasing the actual device, this Oura Ring 4 Smart Ring Sizing Kit includes multiple sample sizes for accurate comparison. You can try different sizes on your preferred finger during daily routines and rest hours. Therefore, you can confidently select a size that feels secure and comfortable for continuous wear.


            Overnight Comfort Testing

            Since the Oura Ring supports sleep monitoring, consistent finger contact is essential. This sizing kit allows you to assess how each size feels while sleeping, typing, or performing routine tasks. As a result, you can evaluate long-duration comfort before finalising your ring size.


            Android Usage Readiness

            Compatible with Android OS, the Oura Ring connects with supported smartphones for health insights. While this sizing kit itself does not pair digitally, it prepares you for smooth long-term usage by ensuring the selected size fits properly. Hence, you can proceed with confidence knowing your ring will sit securely during synced tracking.


            Stable Wear Assessment

            Supporting a device ecosystem that uses Bluetooth Low Energy (BLE), correct sizing using this sizing kit helps maintain steady contact for consistent data transfer. By testing sizes in advance, you can ensure your ring remains comfortably in place during everyday activities. Consequently, you can expect reliable performance once the actual smart ring is activated.


            Comfort-Focused Fit Trial

            Designed to reflect the feel of the titanium smart ring, this Oura sizing kit helps you understand how the ring rests on your finger. You can check movement flexibility and overall comfort before making your final selection, ensuring readiness for all-day and overnight health tracking.

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