The ornamental design for a watchbracelet, as shown and described.
FIG. 1 is a perspective view of a watch bracelet showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a front elevational view thereof; and,
FIG. 5 is a bottom plan view thereof.
The left side elevational view is a mirror image of the right side elevational view; the rear elevational view is a mirror image of the front elevational view.
The broken lines shown in the drawings represent unclaimed portions of the design and form no part thereof.