Yamaha SKB2 Survival Kit
Contains everything you need to make using your Yamaha portable keyboard just that much more enjoyable. Every box contains a power adaptor, a foot switch (except for SKC - 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. Works with PSR-E223/323/423/413 portable keyboards, NP11 61-key piano-style keyboard, EZ-200 lighted keyboard, and EZ-AG lighted digital guitar.