Bought a Grandchild her first wooden puzzle - 8 farm animals. Grandpa installed the battery and we both laughed like little kids at the animal sounds that came out when each piece was replaced into its correct spot. Within the hour, several pieces no longer worked. The little granchild was careful with the puzzle. She was supervised as she was given this gift. It was so disappointing . . . . to us . . . . when it no longer worked. She was thrilled. Will contact seller to see if there is a go-around to re-start the audio.