Key Features :
i : See and hear the alphabet with this 26-piece wooden Alphabet Sound Puzzle with brightly colored uppercase lettersii : 10" X 13.5" X 0.8" sturdy wooden puzzle board (AAA batteries required, not included)iii : Pictures under pieces for easy matching and enhanced learning opportunities; letters sit slightly above the puzzle board for easy graspingiv : TIP: Puzzle has light-activated sensors; for best results, expose the sensor by removing a piece in a brightly lit room, then make the sound play by replacing the piece in the boardv : Makes a great gift for preschoolers, ages 3 to 5, for hands-on, screen-free playvi : Melissa & Doug Wooden Alphabet Sound Puzzle - Wooden Puzzle With Sound Effects (26 pcs)