FeaturesThe child friendly sound levels protect children\'s previous hearingHeadphones come with a built-in rechargeable battery and USB charging cable to charge at home or on-the-goAdjustable headband and padded ear cushions provide a custom fit.Great stereo sound provides fabulous soundsCool graphics and character stylingThese eKids Spider-Man KIDsafe Volume Controlled Bluetooth Wireless Headphones allow you to wirelessly stream audio from a smartphone, tablet or computer.