iPhone 11 or later with iOS 27 or later, per Apple’s current buying page. No Android pairing.
No subscription for built-in trackingApple Watch SE 3
Apple’s current SE model pairs workout and sleep records with an always-on screen and iPhone integration.
No subscription for built-in trackingAs an Amazon Associate I earn from qualifying purchases. Amazon UK links use mastq-21. Other brand and app links currently earn no commission. Manufacturer prices are dated snapshots, not Amazon prices. Listings are researched, not hands-on reviews.
Does it fit your setup?
Phone requirements
iPhone 11 or later with iOS 27 or later, per Apple’s current buying page. No Android pairing.
Choose it if
You already use an iPhone and want activity tracking plus everyday smartwatch functions.
Look elsewhere if
You use Android or prefer several days between charges.
Battery
Manufacturer claim: up to 18 hours; up to 32 hours in Low Power Mode.
What does membership change?
Without a paid plan
Built-in workout, activity and sleep tracking.
Paid features
Fitness+ content, cellular service and third-party apps may cost extra; they are not included in the base comparison.
Trial & renewal
Eligible purchases may include service trials; calculator excludes optional services and trial discounts.
Privacy point to check
Apple Health permissions are controlled per app and data type. Health data in iCloud uses end-to-end encryption when requirements including two-factor authentication are met.
United Kingdom snapshot
Starting device price for the specified model.
Paid plan, if chosen
Annual: £0.00
Monthly: £0.00
Two-year default comparison
£219.00 · core tier, optional upgrades excluded
Official local price source ↗Membership source ↗
Starting price for 40mm GPS; upgraded straps, cellular model and carrier fees cost extra.
The sources behind the comparison.
Checked 2026-10-21. Published specifications and terms, not hands-on findings. Confirm current local availability before buying.