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Oura Ring 4 vs. Oura Ring Gen 3: Should you upgrade?

What are the differences between the Oura Ring 4 and Oura Ring Gen 3?

For All-titanium build 8-day battery life 12 sizes Improved health-monitoring accuracy Automatic activity detection (AAD) with HR data CategoryOura Ring 4Oura Ring Gen 3MaterialsTitanium with physical vapor deposition (PVD) coating or Diamond-like Carbon (DLC) coating (Stealth)Titanium exterior, epoxy interiorProtectionWater resistant at a depth of 100m/328ftWater resistant at a depth of 100m/328ftSensorsRed, green, and infrared LEDs (heart rate, blood oxygen)PPG sensors, red and green LEDs (heart rate, blood oxygen)Row 3 - Cell 0 Digital temperature sensorNTC sensor (nighttime temperature)Row 4 - Cell 0 AccelerometerAccelerometerBatteryUp to 8 days, up to 80-minute charge timeUp to 7 days, up to 80-minute charge timeConnectivityBluetooth LEBluetooth LEPlatform supportiOS (Apple Health), Android (Health Connect)iOS (Apple Health), Android (Health Connect)DimensionsWidth: 7.9mmWidth: 7.9mmRow 9 - Cell 0 Thickness: ~2.88mmThickness: ~2.7mm (Heritage), ~2.9mm (Horizon)Weight3.3-5.2g (depending on size)4-6g (depending on size)Sizes4-156-13ColorsBlack, Brushed Silver, Gold, Silver, Rose Gold, StealthBlack, Silver, Stealth, Gold, Brushed Titanium (Horizon only), Rose Gold (Horizon only) With smart sensing, the Oura Ring 4 should also be able to respond better to people with different finger physiology, meaning users across genders, skin tones, and ages will benefit from better accuracy.

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