Difference between watch series 6 and 8

- Difference between apple watch series 6 and 8
- Difference apple watch series 6 and 8
- Difference between apple watch series 6 7 and 8
- Difference between watch 6 and 8
- Difference between apple watch series 6 7 8 9
- Difference between apple watch 6 and 8
- Difference between apple watch 7 and 8
- Iwatch 6 vs 8