Portable light and sound machine calms babies and young kids with three different sounds - shushing, heartbeat and white noise 3-D icons make it easy to find and toggle sound, volume and light controls in a dark or dim setting Soft night light can glow solid or pulse in sync with the selected sound Auto shut-off timer for 10, 20 and 30 minute increments - 30 minute maximum conserves battery life Battery operated, portable and perfect for naptime on-the-go Requires 2 AA batteries (not included). To change the battery, simply line up battery and lock icon. Makes a great baby shower (or anytime) gift for new parents, grandparents or caretakers Great for all around the home, nurseries, daycare and travel