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
Health sensors — New heart sensor measures every 5 seconds · HRV 24x more frequent · Readiness Score 0–10
Battery — General use: 24 hrs (unchanged) · Outdoor workout: 10 hrs (+25%) · 15-min charge = 12 hrs (+50%)
Sizes and materials — 42/46mm · Aluminum (Ceramic Shield 2, 60% tougher), titanium, ceramic · Design nearly identical to Series 11
Audio Intelligence (beta) — Live Rewind, Siri Recap, Sound Recognition, Shazam · Launches late 2026, English only, requires iPhone 16+ with Apple Intelligence
Thailand pricing — Aluminum GPS 14,900–16,900 · +Cellular 18,900–20,900 · Titanium 25,900–27,900 · Ceramic 33,700–35,700 baht · Pre-orders open now, sales start Sept 18
Source: Apple
