Record personalized sounds. You can make any sound you need, speeches, songs, messages, etc. Great for communication. Use as a teacher-student interaction tool, game tool. Message to family members, roommates. Pet training tool to teach your dog to communicate through buttons, such as "outside", "meal time", "bed time", "love you", etc. PERFECT GIFT: The answer buzzer will help you find more fun in leaning. Ideal gift for holiday, back to school, birthday, Christmas, Halloween, Easter Sunday. Powered by 2*AAA batteries (batteries not included, need to buy separately). Packing list: 4*pet communicator We only sell the pet communicator, not the other items in the picture. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, please allow minor size errors.