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🧵 2. Series 9 and Ultra 2 feature Apple's latest S9 SiP chip for enhanced performance. Both models offer advanced features like ECG, temperature sensors, compass, altimeter, and more. SE uses the older S8 SiP chip.

🧵 3. Display brightness varies among models, with Ultra 2 boasting the brightest screen at 3,000 nits. Battery life ranges from 18 to 72 hours depending on the model and usage. Models also differ in case sizes and features.

🧵 4. Despite their differences, the SE, Series 9, and Ultra 2 all offer unique advantages. This guide helps you decide which Apple Watch best suits your needs and preferences.