My Music World Kids Safety Headphones - Line-In Connectivity for MP3/iPod (Ages 3+)Introduce your child to the joy of music with the My Music World Kids Headphones. Designed with bright colors and a comfortable fit, these headphones are a fun accessory for any young music lover Ages 3+. The primary function relies on the included line in socket, which provides a simple and direct way to connect the headphones to popular personal audio devices. Specifically, the cable allows kids to connect to an iPod, MP3 player, or CD player,