Which Apple Watch and strap is right for you?

The Apple Watch Series 8 is available alongside the Apple Watch Ultra and the second-generation Apple Watch SE. All other Apple Watch models have been discontinued through Apple, though luckily, all the straps remain compatible across all the generations.

Source : https://www.pocket-lint.com/smartwatches/buyers-guides/apple/133135-which-apple-watch-and-strap-is-right-for-you/