Headband portion of headphone device

FIG. 1 is a perspective view of a headband portion of a headphone device showing my new design, as viewed from the top and front.

FIG. 2 is a front profile view of the headband portion shown in FIG. 1 .

FIG. 3 is a back profile view of the headband portion shown in FIG. 1 .

FIG. 4 is a first side profile view of the headband portion shown in FIG. 1 .

FIG. 5 is a second side profile view of the headband portion shown in FIG. 1 .

FIG. 6 is a plan view of the headband portion shown in FIG. 1 ; and,

FIG. 7 is an inverse plan view of the headband portion shown in FIG. 1 .

The details shown in broken lines illustrate features that are for illustrative purposes only; the broken lines form no part of the claimed design.