Compare smartwatches
20 watches, two ecosystems. Apple Watch Series 11 and Ultra 3 are the current Apple pair, and Samsung's Galaxy Watch 9 and Watch Ultra 2 went on sale in August 2026. Series 12 and Ultra 4 are the next Apple generation and have not been announced. Blood glucose is still not here. Blood pressure finally is, on Samsung.
Build your comparison
Pick any two or three watches 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.
Runtime well ahead of the next closest (Amazfit T-Rex Ultra 2, up to 177 hrs).
Longest battery life
Manufacturer's stated maximum, in hours — higher is longer.
Devices with no published runtime aren't shown.
Cheapest smartwatches
Device price — lower is cheaper.
Device floor price only.
Capability grid — who does what
Health & safety features
A filled dot means the watch ships the feature; hover any dot for the exact spec.
Roadmaps
Amazfit T-Rex 3 Pro
The T-Rex Dual Solar is out now at $649.99. Amazfit rates it at up to 25 days of typical use, or up to 51 days with three hours of sun a day on its back.
Full roadmap →COROS PACE Pro
The PACE 4 Pro is out now at $449. It gets up to 60 hours of GPS on a 1.47-inch AMOLED screen under sapphire glass.
Full roadmap →Amazfit T-Rex 3
The T-Rex Dual Solar is out now at $649.99. Amazfit rates it at up to 25 days of typical use, or up to 51 days with three hours of sun a day on its back.
Full roadmap →COROS PACE 4 Pro
The PACE 4 Pro is out now at $449. It gets up to 60 hours of GPS on a 1.47-inch AMOLED screen under sapphire glass.
Full roadmap →COROS PACE 4
The PACE 4 Pro is out now at $449. It gets up to 60 hours of GPS on a 1.47-inch AMOLED screen under sapphire glass.
Full roadmap →COROS PACE 3
The PACE 4 Pro is out now at $449. It gets up to 60 hours of GPS on a 1.47-inch AMOLED screen under sapphire glass.
Full roadmap →Amazfit T-Rex Dual Solar
The T-Rex Dual Solar is out now at $649.99. Amazfit rates it at up to 25 days of typical use, or up to 51 days with three hours of sun a day on its back.
Full roadmap →Amazfit T-Rex Ultra 2
The T-Rex Dual Solar is out now at $649.99. Amazfit rates it at up to 25 days of typical use, or up to 51 days with three hours of sun a day on its back.
Full roadmap →Apple Watch Series 11
Series 11 added sleep apnea and hypertension alerts and brought blood oxygen back, in the thin Series 10 body. Launched at $399.
Full roadmap →Apple Watch Series 12
Series 12 went on sale September 18 at $399. The design is unchanged. The S11 chip and the new Health Sensing System are what is new.
Full roadmap →Apple Watch Ultra 3
Apple Watch Ultra 3 runs 42 hours, messages by satellite and carries 5G, wrapped in titanium. Launched at $799.
Full roadmap →Apple Watch Ultra 4
Ultra 4 ships September 18 at $799 with the S11 chip and up to 50 hours of battery. The case is unchanged.
Full roadmap →Galaxy Watch Ultra 2
Galaxy Watch Ultra 2 packs an 800mAh battery, 35% more than the last Ultra, and runs the Snapdragon Wear Elite. On sale since August 7 at $699.99.
Full roadmap →Galaxy Watch Ultra
Samsung Galaxy Watch 8
Galaxy Watch 8 carries Samsung's deepest health stack yet, including blood pressure and the Antioxidant Index.
Full roadmap →Samsung Galaxy Watch 9
Galaxy Watch 9: July 22. 23% bigger battery. Full Galaxy AI health suite. Snapdragon Wear Elite chip.
Full roadmap →Pixel Watch 4
Pixel Watch 4 is the old one now, and discounting. Up to 40 hours with the screen on, satellite SOS on LTE, Android only. From $349.99.
Full roadmap →Pixel Watch 5
It looks familiar, but the changes underneath matter more this year. Google kept the design and moved the chip and the health features instead.
Full roadmap →Garmin fēnix 9
Garmin Forerunner 970
Fitness, adventure, sleep or all-day health tracking — answer a few questions and we'll match you to the watch that fits.
Updated October 2026 · Specs verified from manufacturer announcements, regulatory filings, and confirmed leaks. Some specs are reported or estimated — see individual roadmap pages for sourcing.