This is my real-world test and size comparison on wrist for the Apple Watch Series 9, Ultra 2 and SE across 49mm, 45mm, 44mm, 41mm and 40mm. For simplicity we bundle them into small, medium and large sizes. Enjoy!

0:00​​ 👋 Intro
0:27​​ 😍 Comfort, Size & Weight
3:02​​ 💨 Lifestyle & Identity
4:20 ☀️ Screen Size
5:34 🎨 Band Choice
6:18​​ 🔋 Battery Life & Features
7:13​​ ⌚️ Price
7:55​​ 🚀 Recommendations