Material:Natural maple wood. Music box size:about 7*6.4*4cm/2.75*2.51*157 inches. Due to the nature of the wood grain, the box you received maybe a little different from the picture shows, hope you understand,thanks. Clockwork ,no battery needed,you just need to turn the key for 3-4 circles ,then let it go and it plays the song Merry Go Round of Life Sankyo Movement - Built-in premium quality movement to assure a very high sound quality. A cute, creative product for your friends, spouse, sweetheart, relatives, or yourself as a birthday gift. Note: It will not stop when you close the cover. Package include: 1pc music box with gift box,1 small card.