US Patent 7986803 Ear bud speaker earphone with retainer tab

An ear bud earphone having an outer portion, which may be a microphone or sound input or a contact for wires or acoustic tubes, a central body portion, an ear canal main body and a tab. The ear canal main body of the earphone has flexibility to conform to the ear anatomy. The ear (pinna) has a helix, an anti-helix, a concha including the anatomical elements of a cymba and a cavum, and an ear canal. The ear canal main body is partially inserted into the concha and ear canal opening, with the tab resting on or under the anti-helix.