Nighty Night Owl™ Smart Sensor - This adorable owl is a white noise plush that plays sound plush that plays 8 soothing sounds and melodies! These soothing sounds help babies and children go to sleep faster. The Nighty Night Owl™ includes a Smart Sound Sensor. If your baby wakes up and makes any sound, the sensor restarts the music to help baby fall back asleep. When bedtime beckons, the plush easily attaches to any crib by using the hook-and-loop fastener behind its head. Features: Smart sensor 4 White Noises : Heartbeat, Rain, Waves, Whale Song 4 Calm Lullabies : Twinkle-Twinkle, Rockabye Baby, Classical Lullaby, Tranquil Melody 23/45 Min Sleep Timer Volume Control Easy Hook and Loop fastener for attachment to crib, stroller or car seat Batteries included Dimensions: Size: 25 x 18 x 24 cm Weight: 0.345 kg