This adorable plush attaches to the crib with a Velcro® strap for safety and a removable sound box plays 3 unique soothing sounds. A 45 minute timer option ensures silence during deep sleep and an on/off button allows complete control of the unit. You can adjust volume to suit background noise, when attached to a stroller, car seat or at home. Sound box runs on 2 AA batteries (included). Imported.