Record up to a 30 second message for each of the 30 pockets, allowing so many activities! Easy to use for both children and teachers, simply by pressing the green button by the pocket and record into the black box at the top! A simple switch moving from record to play, will then enable to play back the message by pressing the green below each pocket. The 30 different tiles can each record up to 30 seconds messages. Outdoor and indoor use. Some ideas for use: Math sums, Identifying shapes, alphabet, storyboards, quizzes, timelines, emotions chart, class rules, nursery rhymes, musical instruments, famous people and so much more. The sturdy plastic chart has 2 wall mounting eyelets and vinyl pockets. Requires 3 X 1.5 v AAA batteries (not included).