Sungale Children-Safe Hearing Headphone, Black (RH301-B) Best Back To School gift. Protect your childrens hearing by control the maximum volume Excellent sound quality for listening music, watching movies and playing games Soft pads, adjustable headband and foldable design to fit various users including man and woman. Standard 3.5mm headphone jack to fit with variety of devices including smart phones and tablets, mp3/mp4 players, car entertainment systems, laptops, desktop computers, and handheld video game systems Connectivity technology : Wired