Amazon exclusive model includes power adapter and sustain pedal 88 fully weighted piano style keys simulate the feel of an acoustic piano and provide a quality playing experience Contains 10 different voices, including digitally sampled tones from real Yamaha acoustic grand pianos Dual mode lets you combine 2 voices together, like piano and strings, for an inspiring new playing experience Slim and stylish design with a depth of less than 12 inches, the P71 requires little space and weighs only 25 pounds