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  • Size Before You Buy - Oura Ring 5 Sizing Kit allows you to find the ideal fit before purchasing
  • A properly fitting Oura Ring 5 will result in the highest possible data accuracy, comfort, and overall experience
  • Oura Ring 5 sizes are slightly different from standard ring sizes and other Oura Ring generations
  • Oura Ring 5 works on all fingers and can be worn on either hand
  • For optimal accuracy, we recommend wearing on your index, middle, or ring finger

Specifications

  • Product Category

    • Ideal For

    • Unisex
    • Wearable Device Type

    • Sizing Kit
    • Compatible Devices

    • Not Applicable
    • Manufacturer Details

      • Brand

      • Oura
      • Model Series

      • Ring 5
      • Model Number

      • JZ98-63255-RL
    • Product Dimensions (Open)

      • Dimensions In CM (WxDxH)

      • 10.85 × 10.85 × 3.1
      • Product Weight

      • 1 g
      • Dimensions In Inches (WxDxH)

      • 4.27 × 4.27 × 1.22
    • Features & Functions

      • Health Tracker

      • Not Applicable
      • Features

      • Not Applicable
      • Compatible OS

      • Not Applicable
      • Touch Controls

      • No
    • Physical Attributes

      • Ring Size

      • 06 - 13
    • Network Connectivity

      • Bluetooth Specifications

      • Not Applicable
      • Bluetooth Supported

      • No
      • Wi-Fi Supported

      • No
    • Battery Details

      • Charging

        • Wireless Charging Options

        • No
      • Materials & Durability

        • Body Material

        • Plastic
      • Aesthetics

        • Brand Color

        • Sizing Kit
        • Color

        • WHITE
      • In The Box

        • Documents

        • 1 x Warranty Card
        • Main product

        • Sizing Kit
          • Package Includes

          • 1 x Oura Ring 5 Sizing Kit Set (sizes 6-13), 1 x Sizing instructions / guidance leaflet
          • Generic Name

          • Wearable Device Accessory
        • Packaged Dimensions

        • After Sales & Services

          • Warranty on Main Product

          • 24 Months
          • Warranty Type

          • Mail-in Service
          • Standard Warranty Includes

          • Manufacturing Defects
          • Standard Warranty Excludes

          • Physical Damage
            • Installation & Demo applicable

            • No
          • 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

          Introducing the remarkably thin and light Oura Ring 5 - the smallest smart ring ever made, with even more sensing power than previous generations. 40% smaller and ultra-lightweight, Oura Ring 5 fits in seamlessly with your life and your style. Designed to look and feel like a regular ring. With 1 week of battery life you can even forget it’s on. With 50+ health metrics and insights at your fingertips, Oura helps you turn daily habits into a longer, healthier life. Your Oura Membership and your Oura Ring go hand in hand to help you achieve your health goals.


          Sleep

          Wake up to in-depth analysis about your sleep, so you can improve your habits and transform how you feel (Daily Sleep Score- Sleep Stages- Nap Detection- Sleep Debt)


          Activity

          Whether you're running a marathon or running errands, Oura tracks your daily activity and workouts while helping you strike a balance between movement and recovery (Daily Activity Score Automatic Activity Detection - Step and Calorie Count- Heart Rate Tracking and Zone Trends)


          Stress

          Oura detects moments of stress to help you identify your unique triggers and recovery tactics (Daytime Stress- Stress Resilience- Cumulative Stress- AI Guidance for Stress Management)


          Women's Health

          Oura helps you understand how your cycle affects your body, so you can make better, informed decisions about your health (Cycle Insights track your cycle phases using your biometric - Period and Ovulation Detection - Pregnancy Insights - Menopause Insights - Hormonal Birth Control support)


          Heart Health

          From monitoring your daily heart rate and HRV to discovering your Cardiovascular Age and Cardio Capacity, Oura helps you take care of one of the key indicators of your overall health - your heart (Cardiovascular Age- VO2 Max - Heart Rate Variability Trends - 24/7 Heart Rate Tracking)


          Critically Acclaimed Backed by Science

          The award-winning Oura Ring is trusted by academic institutions, athletes, physicians, and a growing community across the globe (5+ million Oura Members worldwide - 12+ years of research and innovation - 35+ in-house PhDs across science, engineering, and research)


          Accuracy

          Oura Ring is powered by sensors that adapt to your unique physiology — delivering accurate, continuous data, day and night. With 50–100x stronger signals on the finger than the wrist, Oura Ring is accurate by design, helping ensure high-quality data for your insights.


          Privacy

          Your health data is deeply personal, and protecting it is fundamental to everything we do. At Oura, you are always in control of your information. Your privacy is our priority.

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