Go on an adventure with the world-famous plumber! These kids headphones with Mario are the perfect companion. These kids\' headphones are designed to listen to music, watch movies and play games. The children\'s headphones are limited to 85 dB, and have been tested and passed as suitable for children aged 3 - 7 years. The headphones can be used with all your favorite devices using a 3.5mm universal socket (ie use with iPads, ipods, tablets, handheld games, learning devices, portable DVD players, 2Ds XL and Nintendo Switch). The headphones also have an adjustable padded headband with soft ear pads for comfort.Adjustable padded headband with soft touch ear pads for comfort. Compatible with all devices using a 3.5mm universal jack (i.e. smartphones, tablets, laptops, etc.) Productinfo:  Speakers: 30mm DriversFrequency Response: 20Hz - 20KHzImpedance: 32 ohmSensitivity: 85dB ± 5dBPower Capability: 50 mWRated Power: 5 mWConnector: 3.5mm plugCable length: 0.9m