Apple Watch SE 3 (GPS, 40mm) vs Apple Watch Series 10 46mm Cellular

The Series 10 is the better watch: a larger 46mm always-on display, a wider OLED panel, ECG and blood oxygen sensors, cellular, and faster charging in a thinner case. The SE 3 keeps the essentials — sleep apnea alerts, temperature sensing, fall and crash detection, always-on display — in a smaller 40mm aluminum body with the same S10 chip. Buy the SE 3 if you want a light, simple iPhone companion at the lowest outlay; step up to the Series 10 if you want the bigger screen, cellular freedom, and the extra heart sensors.

• Choose the Apple Watch SE 3 if you want the core health and safety features in a smaller 40mm case and don't need cellular or ECG.
• Choose the Apple Watch Series 10 if you want a bigger 46mm screen, cellular, ECG and blood oxygen, and a thinner, lighter-feeling case.