The Baby Shusher has a real human recording of someone shushing, which gives you a break from shushing your baby to sleep for long periods of time. The 15 to 30 minute timer promotes long shushing sessions while getting difficult children to sleep. It has an adjustable volume which promotes quiet use during the night without keeping everyone awake while soothing baby. It also includes a wrist strap so you can strap it to your arm while carrying your baby when putting them to sleep. 2 AA batteries are included so you can use your Baby Shusher as soon as you get it.