Special 20 - Awesome response, superior bendability and the sweetest tone ever. This harp is the first choice for those learning to play. Its special airtight design makes it the most recommended go-to harp for harmonica players of any style, including blues, country, folk or rock. The plastic comb doesn't absorb moisture making it longer lasting. Harp of choice of harmonica virtuoso John Popper (of Blues Traveler) and played by Bob Dylan on his 2007/08 tour. Chances are your favorite player has several of these harps in his case. 12 major keys plus lower and higher octave tunings. It is approximately “4 inches” long.