Contains everything you need to make using your Yamaha portable keyboard just that much more enjoyable. Every box contains a power adapter, a foot switch (except for SK1C - not required), headphones, and a DVD with tons of learn to play software, digital owner's manuals and information on other Yamaha products. Plus, you also receive a two-year extended warranty and over $200 of rebate coupons on great Yamaha instruments and accessories. Package Contents: Yamaha Power Adapter (PA130) Foot switch Stereo Headphones 2-Year Extended Warranty Hundreds of dollars of Rebate Coupons Survival Kit DVD Playing with Styles DVD Works With: PSR-E223 PSR-E323 PSR-E423 PSR-E433 PSR-E413 EZ-220 EZ-200 EZ-AG.