Patent ID: 8406447

Claim:
An earphone device comprising a main body to be inserted in to the outer ear canal of a user, the ear canal having an upper and lower portion as defined when worn in an upright user, the main body of the device having a first side that faces the user's head when inserted, a cavity and a sound opening connecting the first side with the cavity, the main body further comprises an ear canal protrusion, having an upper and lower edge, to be inserted into the entrance of the ear canal, wherein the cross section of the ear canal protrusion is smaller than the cross section of the ear canal and that the ear canal protrusion is having a first side adapted to lie against the ear canal wall and a second side lying opposite the first side and beside the sound opening; said sound opening being offset in said protrusion to be immediately adjacent said lower edge and wherein the second side of the ear canal protrusion has a peripheral edge which is symmetric about a vertical axis bisecting the second side into two portions, and wherein each portion has a convex profile extending into the ear canal, said side portions being joined together at the lower edge by a concave central portion which is less intrusive of the ear canal than said convex portions, so that high frequency sound absorption by the main body is minimized.