The ornamental design for a watch, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front view and embodiment of a watch showing my design; and,
FIG. 2 is a front view and second embodiment of a watch showing my new design.
All portions of the watch not shown in the figures form no part of the design claimed.