FIG. 1 is a perspective view of a watch case according to our new and ornamental design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left-side view thereof;
FIG. 6 is a right-side view thereof;
FIG. 7 is a top view thereof;
FIG. 8 is a bottom view thereof;
FIG. 9 is an enlarged view of area A in FIG. 2; and,
FIG. 10 is an enlarged view of area B in FIG. 5.
The alternating short and long dashed lines surrounding portions of the watch case illustrate the boundaries of the enlarged views and form no part of the claimed design. The evenly-spaced dash lines illustrate elements of the watch case that form no part of the claimed design.