Yamaha YPT-220 61 Key Personal Keyboard with AC Adapter 61-key portable keyboard with 375 high-quality instrument voices and 100 accompaniment styles Portable Grand button lets you instantly call up Yamaha's world-famous grand piano sound Yamaha Education Suite (Y.E.S.) feature; 102 built-in songs for easy learning Reverb effect with 9 different reverb types NOTE: power supply is located in the end caps of the keyboard packaging-be careful to avoid discarding it when unpacking your new keyboard!