Patent ID: 6961434

Claim:
A headphone, said headphone being watertight and comprising a hollow tube having a distal end and a proximal end, said proximal end being open and substantially hydrophobic, a plug surroundingly associated with said proximal end, said plug being adapted to sealingly engaging an outer ear canal adjacent to an eardrum in a substantially water tight fit, an electro-acoustic transducer mounted at approximately said distal end and enclosed therewith by a housing, said transducer adapted to being connected to a source of electric signals, said transducer including a diaphragm element, said diaphragm element being adapted to generating acoustic waves responsive to said electric signals, said transducer housing and enclosing a first volume of air, said hollow tube enclosing a second volume of air, said second volume being at least as great as said first volume, said transducer being acoustically associated with only one said hollow tube.