Silicone flexible roll up piano 1.Material:silicone,waterproof / foldable 2. Style: 49 keys 3. Good gift for child Silicone hand roll up piano1. 49 keys: 6 demonstration songs, 16 tone colors, 10 rhythmsKeyboard size: 73*17.1*0.3cmWeight: 720g2. 61 keys: 100 different rhythm sections 128 different tones 40 demo-plays Piano preset songs LCD indicatorKeyboard size: 88*17.4*0.5cmWeight: 830g3. ...