The ear tubes are of silver metal with black plastic ear inserts. There is a metal yoke connecting the tubes. Two blue rubber tubes go from the ear tubes to the diaphragm. One of the rubber tubes has been repaired with tape. In the middle of the diaphragm is a lever. Directly below the lever is a silver horn bell that continues as plastic. Opposite from the lever is a flat diaphragm. The flat diaphragm is black plastic and is held in place by a removable metal cover.