the husher by healthcare zoo - the baby sleep aid for new and expecting parents the husher the healthcare zoo husher is an excellent sleep aid and a must have tool for any new or expecting parent. this versatile device includes four lullabies and four different environment sounds that can be set to play for 15, 30, 45-minutes, or an unlimited amount of time. the sounds included: a lullaby, white noise, heartbeat, rain and a shushing sound. the husher has a noise sensor which allows the selected sound to play automatically. in addition, you can also custom record your own voice to play automatically when your baby begins to cry so they hear your comforting voice.