The ornamental design for a retail displaydevice, as shown and described.
FIG. 1 is a perspective view of the retail display device according to the present invention.
FIG. 2 is a front view of the retail display device according to the present invention.
FIG. 3 is a rear view of the retail display device according to the present invention.
FIG. 4 is a side view of the retail display device according to the present invention.
FIG. 5 is a side view of the retail display device according to the present invention.
FIG. 6 is a top view of the retail display device according to the present invention; and,
FIG. 7 is a bottom view of the retail display device according to the present invention.
The broken lines are for illustrative purposes only and form no part of the claimed design.
The retail display device is intended to be used to display goods in retail establishments and may be attached to a shelving unit or displayed on a shelf or counter.