Oura Ring 4 - Silver - Size 8 - Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible Metallic Silver 8

OURA

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The Oura Ring 4 is the definitive wearable diagnostic anchor that utilizes medical-grade sensors to track sleep architecture, heart rate variability, and metabolic recovery markers, providing the high-fidelity data required to validate and refine the Protocol Longevity framework.


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$ 342.99

Description

QUANTIFIED LONGEVITY: OURA RING 4 BIOMETRIC PROTOCOL

The Gold Standard for Sleep Architecture, HRV, and Metabolic Tracking

PRODUCT PROFILE: OURA RING 4 (SILVER)

EXECUTIVE SUMMARY: The Oura Ring 4 is the world's most advanced wearable diagnostic tool, engineered to provide high-fidelity insights into the body's internal state. By utilizing medical-grade sensors to track Sleep Architecture, Heart Rate Variability (HRV), and Activity, Oura Ring 4 translates complex biological signals into actionable daily scores. As the "Data Cluster" anchor of the Protocol Longevity framework, this hardware is essential for quantifying the efficacy of mitochondrial supplements and thermal therapy protocols through real-time bio-feedback.

KEY BENEFITS & CLINICAL EFFICACY:

  • Precision Sleep Architecture: Advanced algorithm tracks Light, Deep, and REM sleep cycles with clinical-level accuracy, identifying the exact recovery phases required for cognitive and cellular repair.
  • Heart Rate Variability (HRV) Analysis: Monitors autonomic nervous system balance to provide a "Readiness Score," indicating when the body is primed for high-performance or requires rest.
  • Metabolic & Women's Health Tracking: Utilizes temperature-based sensing to track hormonal cycles and metabolic shifts, providing a comprehensive view of systemic homeostasis.
  • Advanced Personal Health Advisor: Features a sophisticated bio-feedback engine that correlates activity levels with recovery data to provide personalized recommendations for lifestyle optimization.

ENGINEERING & BIO-COMPATIBILITY:

Crafted from aerospace-grade titanium with a sleek Silver finish, the Oura Ring 4 is designed for 24/7 durability. The interior sensors are recessed for maximum comfort, ensuring that the biological signal remains consistent even during intense physical activity or deep sleep. With an industry-leading battery life of up to 8 days, the Oura Ring 4 provides uninterrupted data streams, allowing for the long-term biomarker tracking necessary to validate longevity interventions.

SAFETY, CONNECTIVITY, AND QUALITY STANDARDS:

  • Medical-Grade Sensors: Features research-grade infrared LEDs and temperature sensors for superior data integrity compared to wrist-based wearables.
  • Android & iOS Compatibility: Seamlessly integrates with the Oura App and major health platforms to centralize your longevity data.
  • Vetting Benchmarks: Extensively validated in peer-reviewed sleep research; recognized by Protocol Longevity for its non-invasive form factor and signal-to-noise ratio.

PROTOCOL IMPLEMENTATION & DATA LOGGING:

To maximize the "Quantified Longevity" signal, Protocol Longevity recommends the following implementation for Oura Ring 4:

  • The Baseline Audit: Wear the ring for 14 consecutive days to establish a biological "Normal" before introducing new supplements or hardware interventions.
  • Recovery Verification: Monitor the impact of your **NAD+ Complete** stack and **Red Light Therapy** on your Deep Sleep and HRV scores.
  • Circadian Alignment: Use the temperature sensing data to optimize your "Sleep-Wake" cycles, ensuring peak mitochondrial recovery during the nocturnal window.

PROTOCOL SPECIFICATIONS: OURA RING 4

Core Technology Multi-Sensor Biometric Diagnostic Wearable
Biological Metrics HRV, Sleep Architecture, Temperature, SPO2
Battery Performance Up to 8 Days (Sustained Data Logging)
Material & Build Titanium / Medical-Grade Inner Molding
Protocol Role Data Verification & Biomarker Hub

COMPARATIVE PERFORMANCE INDEX:

OURA RING 4: Finger-based precision (superior signal), multi-day battery, advanced sleep staging, non-invasive form factor.

WRIST-BASED TRACKERS: Prone to movement artifacts, often lower accuracy for deep sleep metrics, bulky for 24/7 wear.

BASIC SMARTWATCHES: High EMF output, frequent charging requirements, data focused on notifications rather than biological longevity.

*Legal Disclaimer: Oura Ring 4 is not a medical device and is not intended to diagnose or treat any medical condition. Consult with a healthcare provider for the interpretation of your biometric data.

Specifications

  • Memory Storage Capacity : 5 MB
  • Special Feature : Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight
  • Connectivity Technology : Bluetooth
  • Wireless Communication Standard : Bluetooth
  • Battery Cell Composition : Lithium Polymer
  • GPS : GPS Via Smartphone
  • Shape : Round
  • Brand : OURA
  • Style : Metallic
  • Color : Silver
  • Additional Features : Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight
  • GPS Geotagging Functionality : GPS Via Smartphone
  • Band Material Type : Titanium
  • Case Material Type : Titanium
  • Water Resistance Level : Water Resistant
  • Human Interface Input : Buttons
  • Supported Application : Over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more
  • Water Resistance Depth : 100 Meters
  • Supported Satellite Navigation System : GPS
  • Metrics Measured : Body Temperature, Menstrual Cycle, Sleep Duration, Stress
  • Style Name : Metallic
  • Band Color : Silver
  • Wireless Compability : Bluetooth
  • Communication Feature : App Integration, Bluetooth
  • Item Weight : 5.2 Grams
  • Item Dimensions : 0.98 x 0.98 x 0.28 inches
  • Item Dimensions D x W x H : 0.98"D x 0.98"W x 0.28"H
  • Warranty Type : Standard/Full
  • Waterproof Rating : IP68
  • Target Audience : Unisex Adults
  • Model Number : JZ90-54217-08
  • Built-In Media : Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide
  • Wearable Computer Type : Smart Ring
  • Manufacturer : Oura
  • Unit Count : 1.0 Count
  • Warranty Description : 1 Year Manufacturer
  • Best Sellers Rank : #23 in Electronics (See Top 100 in Electronics) #1 in Smart Rings
  • ASIN : B0D9WVSZ56
  • Customer Reviews : 4.0 4.0 out of 5 stars (7,187) 4.0 out of 5 stars
  • Battery Cell Type : Lithium Polymer
  • Battery Average Life : 5 days
  • Battery Charge Time : 80 minutes
  • Display Type : No Display
  • Compatible Devices : Smartphone
  • Compatible Phone Models : Compatible with iOS and Android devices
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Oura Ring 4 - Silver - Size 8 - Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible Metallic Silver 8 is not currently available.

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