SLEEP SHEEP: Inside this sweet, cuddly Sleep Sheep is a secret sleep solution – a sound machine that plays 8 soothing sounds and melodies! COMFORTING: When bedtime beckons, Sleep Sheep easily attaches to any crib using the hook-and-loop fastener behind its head. With 8 soothing sounds and adjustable volume, at the touch of a button your baby will be nodding off in no time at all! 8 SOOTHING SOUNDS: Choose between heartbeat, rain, waves, whale song, or four calming lullabies. Lullabies include Twinkle-Twinkle, Rockabye Baby, Classical Lullaby, and Tranquil Melody. AUTO-OFF: After 23 or 45 minutes (depending on which option you choose), Sleep Sheep shuts off to save battery power and to create a quiet environment for deepest sleep. ON-THE-GO: Easy hook and loop fastener for attachment to crib, stroller, or car seat.