The ornamental design for a timepiece device, as shown and described.
FIG. 1 is a front elevational view of a timepiece device embodiment illustrating my new design, wherein the broken line showings of the gripper portions, dial, pushbuttons, and bolts are environmental only and form no part of the claimed design; and,
FIG. 2 is a front elevational view of another embodiment illustrating my new design, wherein the broken line showings of the gripper portions, dial, pushbuttons, bolts, and thermometer ring are environmental only and form no part of the claimed design.
The broken lines shown in the figures are for illustrative and exemplary purposes only and form no part of the claimed design.