Apple Watch Series 12 review: a more accurate heart sensor and better battery life, but still not your doctor
Heart rate checked every 5 seconds, HRV sampled 24x more often, a new Readiness Score, a design nearly identical to Series 11; Thai pricing starts at 14,900 baht
By Apple · Thursday, September 10, 2026 · 2 min read
Key point — The Apple Watch Series 12 adds a heart sensor that measures every 5 seconds, 24x more frequent HRV, a Readiness Score, and faster charging, with Thailand pricing starting at 14,900 baht.
Why it matters — With a design barely changed from the Series 11, the entire selling point shifts to health data rather than looks.
Buy or skip — Worth upgrading if you're on a Series 8 or older, or want frequent HRV readings · Series 10/11 owners can skip it.
Source: Apple
