Sold in pairs and suitable for a wide variety of audio books such as the following English audio books:
Big Plane's Long Journey
Fire Engine to the Rescue
Little Train's Big Journey.
Speedy Race Car
Old MacDonald Had a Farm - First Steps 4 Sound Book
Wheels on the Bus - First Steps 4 Sound Book
(Some books require more than 2 batteries)
Please check the compatibility of this battery model with the relevant book before purchasing as exchanges will not be entertained for this item.