The Pulse Simulator Palm Sleep Massager is a palm-sized device designed to simulate a pulse feeling for relaxation and sleep aid. This vibrating massager, model HY40, is made of white plastic and is 3 inches in length, weighing 3oz. It can be used on various parts of the body to provide a therapeutic sensation that promotes restful sleep. Perfect for those who struggle with insomnia or simply looking to unwind after a long day.