Apple Watch SE 3 (GPS, 40mm) vs Apple Watch Series 7 (41mm)

Buy the SE 3 if you want the newer chip, always-on display, temperature sensing, sleep apnea alerts and faster charging in a current watch. Buy the Series 7 only if you want a bigger screen and the ECG and blood oxygen sensors, and you accept a 2021 watch on an older chip with a used or remaining-stock battery. Reviewers rate both well, but the SE 3 is the safer long-term pick for most people.

• Choose the Apple Watch SE 3 if you want current health features, an always-on display and fast charging in a new watch.
• Choose the Apple Watch Series 7 if you want a larger screen plus ECG and blood oxygen readings and do not mind a 2021 model.