The front crystal on the Series 7 is more than 50 percent thicker than the one on the Series 6, so it's the most crack-resistant Apple Watch to date. This makes me feel much safer, since I know accidental drops and bumping into things will happen.
Like the Apple Watch SE, and Apple Watch Series 6, the Apple Watch Series 7 is water-resistant up to 50 meters, so it's still great for swimming workouts, soaking in a hot tub post-workout, or showering. But the fact that it has a more-durable screen will makes it less likely that a crack would nix that water-resistance.