Light and sound sleep aid: Our cute and cuddly night-time companion comforts and helps your baby learn how to fall asleep and resettle after waking, so you and your little one can get more sleep. Intelligent CrySensor: If baby cries, your Grofriend responds by automatically playing your choice of lullabies or calming sounds to soothe and reassure your baby, and encourage them back to sleep. Six soothing sounds and adjustable volume: Soothe your baby back to sleep with a comforting heartbeat, gentle rainfall, calming white noise or select one of three relaxing lullabies. USB-rechargeable: Our Grofriend sleep aid is rechargeable with mini-USB cable and once fully charged, the battery will last up to approximately 25 hours*. Adjustable nightlight: The heart-shaped light in your Grofriend’s tummy helps to create a calming sleep environment has 3 different brightness levels so you can adjust the intensity of the light.