This children's toy is not only fun and entertaining, but it also has educational benefits. The realistic heartbeat simulation can help your child learn about the human body and how it works. The heart-shaped design adds a meaningful and thoughtful touch, making it a perfect gift for any child. Features -Color:Red -Material:Plastic -Size:7.50X6.50X1.50cm/2.95X2.55X0.59in -Power supply: 2 x AAA battery (not included) -Innovative and unique simulation heartbeat box toy that provides endless hours of entertainment. -Realistic heartbeat simulation helps your child learn about the human body. -Durable and easy to clean, making it a practical choice for busy parents. -The regular and peaceful heartbeat sound can make the kids or pets fall sleep quickly. -The heartbeat simulator is powered by battery, which make it portable and it is also durable to use. Package list: 1 x heartbeat box