Standard Richter tuning, but the first three holes are the same notes as normal holes 1-3 but tuned an octave lower on the C, D and F, giving the player extended range and bending in the first 9 holes. Holes 3-13 are the same as normal 1-10, and hole 14 is an added blow and draw note on the high end. The A and G start in the same octave as the normally tuned diatonic, but have additional notes on the high end. This gives the player a 4 octave range with this tuning. 14 HOLES, 28 REEDS, WOOD COMB, 6 1/4 INCHES LENGTH