Usage Tips:This Heartbeat Box is the perfect your child. With its ability to simulate a real heartbeat, your child will feel warm and comforted. The gentle and safe material is comfortable, ensuring that it won't harm your child's skin. The built-in vibrating heartbeat box make regular sound to help you coax kids into asleep. Features -Color:Red -Material:Plastic -Size:7.50X6.50X1.50cm/2.95X2.55X0.59in -Power supply: 2 x AAA battery (not included) -Our heartbeat box can help you to calm down your pets with the regular simulation heartbeat sound. -With its realistic heartbeat simulation, it creates a soothing and calming effect that can help ease anxiety and promote relaxation. -The gentle vibrations and lifelike heartbeat sound can help coax your child to sleep and provide a sense of safety and reassurance. -Our heartbeat simulator is made with plastic materials that are safe and for children to play with. -The vibrating mechanism is easy to operate and can be turned on and off with a . The battery-powered design ensures that the toy can be used anywhere. Package list: 1 x heartbeat box