The Apple Watch Series 7 comes in three finishes: aluminum, stainless steel, and titanium — while the Apple Watch SE only comes in aluminum. The Series 7 also comes in more colors with an aluminum finish including midnight, starlight, (PRODUCT)RED, blue, and green, whereas the SE comes in space gray, silver, and gold.
The Apple Watch Series 7 gave us several issues trying to get accurate and consistent measurements. On the other hand, the Apple Watch Series 8 and 9 performed perfectly, as did the Apple Watch SE According to Apple, the 41mm Apple Watch Series 7 is sized for wrists between 130mm and 200mm. (That's roughly 5 inches to 8 inches, if you're rusty in the metric system.) The 45mm Apple Watch . 428 417 166 336 334 261 454 459