Perfect for talking books for children!

Batteries received quickly. The've used for a children's audio book. Thought at first that the batteries did not work, but after checking the connections, the problem was the book and probably improper handling by removing the batteries. I straightened the metal tab and from the book works great! I applied the same operation four other books, and no problems. The batteries have an expiration date on the back of the packet attached to October 2019 or in 5 years. Excellent purchase to date. Listed on the duration but then beat the price ....