The ornamental design for a finger-mounted electronic device, as shown and described.
FIG. 1 is a front view of a finger mounted electronic device showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof, the right side being a mirror image;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front left perspective view thereof;
FIG. 7 is a rear left perspective view thereof;
FIG. 8 is a bottom left perspective view thereof;
FIG. 9 is a front left perspective view of the finger mounted electronic device worn on a finger showing our new design; and,
FIG. 10 is a left side view thereof, showing the design worn on a finger.
The broken lines showing a human hand depict environmental subject matter that forms no part of the claimed design. The broken line surrounding the rectangular structure in FIGS. 2, 3, 4, 6, 7, 8 and 10 show unclaimed surface ornamentation. The remaining broken lines depict portions of the finger mounted electronic device that form no part of the claimed design.