The Yamaha SKC2 contains everything you need to get the most from your Yamaha digital drums or portable keyboard. This kit contains a power adaptor, headphones, and a DVD with plenty 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. The Yamaha SKC2 works with Yamaha DD65 and NPV80.