The CDP-S350BK features Casio’s 88-note Scaled Hammer Action keyboard. Through Casio’s meticulous engineering, this keybed delivers stunningly realistic piano feel and response that conveys every nuance of your performances. This scaled hammer action provides the weighting and resistance of a grand piano without the periodic tuning and maintenance that acoustic pianos do. What’s more, the keys feature simulated ebony and ivory surfaces, which not only feel realistic; they wick away moisture to provide a positive grip for confident playing.