The ornamental design for a wearableelectronicdevice, as shown and described.
FIG. 1 is a perspective view of an embodiment of a wearable electronic device with the new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a rear view thereof; and,
FIG. 7 is a front view thereof.
The broken lines shown in the drawings are for the purpose of illustrating portions of the wearable electronic device that form no part of the claimed design.