Difference between apple watch 6 and 7

- Difference between apple watch series 6 and 7
- Difference apple watch 6 and 7
- Difference apple watch series 6 and 7
- Difference between apple watch 6 7 and 8
- Difference between apple watch 5 6 and 7
- Difference between apple watch 6 7 8 9
- What's the difference between apple watch 6 and 7
- Difference between apple watch 6 vs 7
- Difference between apple watch series 6 7 8 9
- Is there a big difference between apple watch 6 and 7
- Difference between apple watch series 6 vs 7
- Difference between apple watch 4 5 6 7
- Comparison between apple watch 6 and 7
- Difference apple watch 6 7 8
- What is the main difference between apple watch series 6 and 7