With this Battery Replacement Kit, your little one will be able to play music non-stop! Each battery set, including the ones that come in the books, provides 1 hour and 20 minutes worth of songs. That's are a lot of times pushing the button!

The Battery Replacement Kit Includes:

• 9 Replacement batteries.
• Teeny tiny screwdriver made to fit perfectly for our books

*These batteries are made only for Musical Books. Cali's Books Timeless Collection uses different batteries (3 AAA )