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#01
#01 in Wearables · TrendingOura

Oura Ring 4 smart ring

See today’s price and delivery options on Amazon.

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Key specs

Sizes
4 to 15 (sizing kit advised)
Battery
Up to 8 days
Water resistance
Up to 100 m
Sensors
Heart rate, SpO2, temperature, motion

Why it’s trending

Oura's fourth-generation ring arrived in India this year.

Suits people who want detailed sleep and recovery tracking without a watch; compare it with the Ultrahuman Ring AIR.

Our take

By Konandi · 21 Oct 2026

Good

  • Titanium ring that weighs about 3.3 to 5.2 g
  • Tracks sleep, heart rate, HRV and temperature
  • Up to 8 days of battery

Worth knowing

  • Detailed insights need a paid monthly membership
  • Sizes differ from normal rings; use the sizing kit
See it on Amazon →

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Oura Ring 4 smart ringView on Amazon