Korg SP170s 88-Key Digital Piano Bundle with Furniture Style Stand, Flip-Top Bench, Dust Cover, Headphones, Instructional Book, and Polishing Cloth - Black Simple in design, the portable and stylish SP-170s emphasizes the vital piano elements: a comfortable keyboard, and a satisfying sound Convenient Piano Play button instantly recalls the main piano sound The Sound button provides access to each of the ten internal sounds The two skillfully sampled concert grand piano sounds capture all the nuances of the performer's touch Natural Weighted Hammer Action (NH) faithfully reproduces the touch of an acoustic piano