The ornamental design for an earwornheartsensordevice, substantially as shown and described.
FIG. 1 is a front isometric view of an ear worn heart sensor device showing our new design;
FIG. 2 is a rear isometric view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a side elevation view thereof; and,
FIG. 6 is a top plan view thereof.
The broken lines in FIGS. 2 and 4 are included for the purpose of illustrating a portion of the ear worn heart sensor device that forms no part of the claimed design.