The ornamental design for a handset, substantially as shown.
FIG. 1 is a top plan view of the handset embodying the new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a left side view of the handset;
FIG. 4 is a right side view of the handset;
FIG. 5 is a perspective view thereof;
FIG. 6 is a top rear view thereof; and,
FIG. 7 is a bottom rear view thereof.
The broken lines are included for illustrative purposes only and form no part of the claim. The boundary lines represent the boundary of the claim and also form no part of the claim.