Apple Watch Series 11 vs Apple Watch Series 12

Apple Watch Series 11 and Apple Watch Series 12 are 2025 and 2026 smartwatches from the same product line. This comparison separates the catalog's listed specifications from missing information and approximate values. It covers 18 fields, including 6 exact differences; it does not choose a winner.

Specifications side by side

"Not listed" means the catalog has no usable value for that field. It does not mean the watch lacks the feature. Approximate values stay visible but do not support the difference count or numeric deltas.

Where they differ

• Release year: Apple Watch Series 11 lists 2025; Apple Watch Series 12 lists 2026. The listed values are 1 years apart.
• Battery, as listed: Apple Watch Series 11 lists Up to 24 hours; Apple Watch Series 12 lists Up to 24 hours (10 workout hours). These are the full listed battery descriptions. Different modes or case variants prevent a single numeric battery-life delta.
• Operating system: Apple Watch Series 11 lists watchOS 26+; Apple Watch Series 12 lists watchOS 27. The listed software descriptions are not a guarantee of the software version currently installed on an individual watch.
• Glass: Apple Watch Series 11 lists Ion-X / sapphire (titanium); Apple Watch Series 12 lists Ceramic Shield 2 (aluminum model). Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
• Case material: Apple Watch Series 11 lists Aluminum / titanium; Apple Watch Series 12 lists Aluminum / titanium / ceramic. Keep the variant qualifications when comparing an individual model; this row describes the catalog entry rather than every configuration.
• Listed sensors and features: Apple Watch Series 11 lists Sleep apnea, Blood pressure trend, ECG, HRV, SpO2, Skin temperature; Apple Watch Series 12 lists Sleep apnea, ECG, HRV, Readiness score, SpO2, Skin temperature. This compares the listed feature names, not measurement accuracy, clinical usefulness or availability in a particular country.

Where they are the same

• Both list case sizes: 42 / 46 mm.
• Both list display: LTPO OLED, Always-On.
• Both list brightness: 2000 nits.
• Both list phone compatibility: iPhone.
• Both list cellular connection: eSIM · 5G.
• Both list water rating: 5ATM.
• Both list gps: Multi-system GNSS.
• Both list maps: No.
• Both list payment system: Apple Pay.
• Both list plan requirement: Not required.
• Both list safety features: Crash detection, Fall detection, SOS calling.
• Both list hardware flashlight: No.

Which one fits you

Apple Watch Series 11 is listed as a smartwatch compatible with iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that the later generation is better in every respect.

Apple Watch Series 12 is listed as a smartwatch compatible with iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that the later generation is better in every respect.

Related pages

• Apple Watch Series 11 specifications
• Apple watches
• Apple Watch Series 12 specifications
• Apple Watch Series 10 vs Apple Watch Series 11
• Apple Watch Series 10 vs Apple Watch Series 9
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• Apple Watch Ultra 3 vs Apple Watch Ultra 4
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• All pair comparisons