Yamaha SK88B Keyboard Survival Kit for YPG535, YPG635, and DGX-640

Contains everything you need to make using your Yamaha portable keyboard that much more enjoyable: a felt Grand Piano key cover and stereo headphones along with three DVDs including a full-length "Watch and Learn" DVD Works with YPG535/635 and DGX-640 88 Key Portable Grands.