Compare smart rings
Oura Ring 5 is the benchmark. Samsung Galaxy Ring 2 is the challenger — arriving early 2027 with a reported solid-state battery and no subscription. Pick any two or three to compare, or scan the leaderboards below.
Build your comparison
Pick any two or three rings and see the specs side by side. A tick marks a spec backed by a quoted, linked source.
By the numbers
The category winners, and the data behind them. Every number traces to a published or leaked spec.
Standalone runtime well ahead of the next closest (RingConn Gen 2, up to 12 d).
Longest battery life
Manufacturer's stated maximum, in days — higher is longer.
Multi-day battery is the ring category's signature. Devices with no published runtime aren't shown.
Cheapest smart rings
Device price — lower is cheaper. Excludes optional subscriptions.
Device floor price only. Oura's required membership ($5.99/mo) is excluded from this figure.
Capability grid — who does what
The health-sensor split is the real differentiator between rings.
Health-sensor features
A filled dot means the ring ships the sensor; hover any dot for the exact spec.
Roadmaps
Oura Ring 4
Oura Ring 4 runs five to eight days, weighs as little as 3.3g and is rated to 100m. It launched at $349 and is discounting now that Ring 5 is here.
Full roadmap →Oura Ring 5
Oura is pushing the ring past sleep and recovery. The bigger story is how much health monitoring it can move onto your finger.
Full roadmap →Ultrahuman Ring Pro
Ultrahuman Ring Pro ships now at $479 with 15-day battery and no required subscription. Sold in the US again since June.
Full roadmap →Samsung Galaxy Ring 1
Samsung's first ring asks for no subscription and does not work on an iPhone. Six to seven days of battery, grade 5 titanium.
Full roadmap →Samsung Galaxy Ring 2
Galaxy Ring 2 delayed to early 2027. The current ring isn't worth buying in the meantime unless you need it today.
Full roadmap →RingConn Gen 2
RingConn Gen 2 runs 10 to 12 days, 150 with the charging case, and never asks for a subscription. It launched at $299.
Full roadmap →RingConn Gen 3
RingConn Gen 3 taps your finger for health alerts. No subscription, $349.
Full roadmap →RingConn Gen 2 Air
RingConn Gen 2 Air is the cheapest way in at $199, with up to ten days of battery and no subscription.
Full roadmap →Evie Ring
Amazfit Helio Ring
The Amazfit Helio Ring skips the subscription and rates to 10 ATM. From $109, available now.
Full roadmap →Sleep, recovery, advanced health sensors or all-day wear — answer a few questions and we'll match you to the ring that fits.
Updated October 2026 · Specs verified from manufacturer announcements and confirmed reports. Some specs are estimated or reported — see individual roadmap pages for sourcing.