The Skip Hop Stroll & Go Baby Soother has two melodies (Brahms’ Lullaby, Sunrise Lullaby) and two nature sounds (waves, rainforest) so you can soothe your little one even when you're out and about. Stand it up on a table or attach it to your stroller, diaper bag, or purse with the silicone strap. It also features an auto-off timer that can be set to 15, 30, or 60 minutes.