It is a Yamaha PSR-E433

From Guitar Center. PATTERN function to create your own grooves Real-time Control knobs for instant effects Real-time pitch control with pitch bend wheel 731 high quality voices including Super-realistic Sweet! and Cool! Voices 186 Varieties of Styles included World Wide Contents 6-track sequencer for recording 10 songs Music Database: 305 song titles for quick keyboard setups 4 Pads x 8 Banks Registration Memory The PSR-E433 offers many innovative features. The basic features for learning to play--like the Yamaha Portable Grand and Yamaha Education Suite (Y.E.S.) -- and features for when it's time to perform, like synthesizer Control Knobs for real-time control of filter, effects, and sound envelope. Powerful new Styles from different musical genres can be performed with 186 different patterns and 150 arpeggio Voices. The easy-to-use professional features and cool design set this keyboard apart in its class.