This is a CD book featuring the sound of a heartbeat that helps babies stop crying, co-developed by doctors and a university institution. I received it in preparation for childbirth, but I never used the CD or read the book, and it has been stored at home. It's new, but it has been stored on a bookshelf for about 6 years, so the cover has some tears and folds. There are no problems with the contents, but please refrain from purchasing if you are sensitive to the condition, as it has been stored at home. - Author: Akira Ikegawa - Includes CD: Unused and unopened - Features: Includes a CD co-developed by doctors and a university institution