Note: Color may vary. You get two tones (one squeezing, the other while the bulb inhales) from this retro bike horn, whose tone is much more a Clarabellian quack (see Howdy Doody if you're too young) than a deep Harpo Marxian (ditto) honk. Which is good on a bicycle. Measures 8" long with a 2-3/8" bell and a rubber bulb that will be either red, black, or purple. Includes a removable handlebar mount.