The Ultimate Yacht Horn, the Kahlenberg Model O2M is an eight trumpet musical air horn for megayachts and cruise vessels. Playable at the touch of a button from the vessel's main console, the O2M Musical Air Horn is supplied with a variety of preprogrammed songs. Additonal songs can be added using an electronic keyboard. The model O2M Air Horn is offered in the configuration shown or in a "Low-Profile" design. See "downloads" for details.