Blue and white swirl acrylic from deadshot, the call still has the hard-rubber tonal plug as the regular K-11 has. This old time slide type 3-in-1 call is marked with Bluebill, Redhead, and Canvasback. The sliding tube allows the hunter to change the tone of the call. This is a reed type call just like the former PS Olt company's was. It is also used for sea ducks. This is the best diver call on the market.