Although it is new and unopened, I have opened the battery compartment once to check the operation at the time of listing. (Batteries not included) Retail price: 1,760 yen The following is from the product website. ★This product is a re-edited version of the "Doyo Utaehon Best 10" released in November 2018, with some changes. Listen, sing, and nurture your senses! Includes 10 popular nursery rhymes In response to requests, a medley function has been added! Includes 10 songs that parents chose in a survey as the ones they want their babies to hear. * The picture book part has cute illustrations and lyrics, expanding the world of the songs. The song button is a three-dimensional button that is easy for babies to press. There is also a rhythm button, and the sound effects change for each song. This is a picture book that allows parents and children to enjoy classic nursery rhymes. ■Included songs 10 songs with vocals ●Inu no Omawarisan (The Policeman Dog) ●Chouchou (Butterfly) ●Donguri Korokoro (Rolling Acorns) ●Happy Birthday ●Kaeru no Gakusho (Frog Chorus) ●Mary-san no Hitsuji (Mary Had a Little Lamb) ●Aiai ●Bun Bun Bun (Buzz Buzz Buzz) ●Mori no Kuma-san (Teddy Bear in the Forest) ●Omocha no Chachacha (Toy Cha Cha Cha) ■Target age: 0-3 years old *From the May 2018 "Survey on Children" by Benesse Corporation ■Size: 160 x 160 x 23mm ■Number of pages: 24 pages