This Heartbeat Simulator is a wonderful present for 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:5.00X4.00X2.00cm/1.97X1.57X0.79in -Battery: 3pcs LR44 button batteries (Included) -Calm Your Pets: Our heartbeat box can help you to calm down your pets with the regular simulation heartbeat sound -Soothing and Calming: With its realistic heartbeat simulation, it creates a soothing and calming effect that can help ease anxiety and promote relaxation -Helps Children Sleep: The gentle vibrations and lifelike heartbeat sound can help coax your child to sleep and provide a sense of safety and reassurance -Safe and Durable: Our heartbeat simulator is made with plastic materials that are safe and durable for children to play with -Easy to Operate: The vibrating mechanism is easy to operate and can be turned on and off with a switch. The battery-powered design ensures that the toy can be used anywhere Package list: 2 x Heartbeat Simulator