Yamaha PSR-E433 Premium Keyboard Package with Headphones, Stand, Power Supply, 6-Feet USB Cable and eMedia Instructional Software Premium bundle includes: Nady closed-cup HP03 headphones, AD5 power supply, World Tour SXKS keyboard stand, 6' USB cable, and eMedia's award winning interactive instructional software. Number of keys: 61 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