NUX NPK-10 Smart Digital Piano Keyboard (White) - 88 KeysTriple Sensor Scaled Hammer Action Keyboard, not just for pricy pianos To provide the most authentic piano feel, NUX NPK 10 is equipped with advanced keyboard features the superior WKJ 03 triple sensors, scaled hammer action, escapement and ivory feel keys, and 5 types of touch sensitivity to fit different styles. It is rare among similar price point products, but NPK 10 understands your desire for the finest touch and the most delicate expression.