C.A. Seydel Söhne Symphony Grand Chromatic Alu C, Chromatic Harmonica New slider option! The standard slide has 25% larger blowing holes. This makes the instrument sound fuller and louder. The Professional slider, on the other hand, has a 2mm shorter slider travel and is characterised by optimal tone control, especially with quiet pieces. The slides can be easily exchanged within 20 seconds. Both slides are included in the delivery@+@+, Key: C, 16 Holes, 64 Stainless steel reeds, With slider option - standard and professional sliders included, The standard slider possesses 25% larger blowing holes and makes the instrument sound fuller and louder, The professional slider with its 2 mm shorter slide action allows for optimised sound control, especially with quiet pieces, Aluminium cover, With aluminium comb and trapezoidal mouthpiece, Airtight construction, Delivered in a case with leather hand straps, Includes standard and professional slider - replacement can be done within 20 seconds