PERSONALIZED LIGHT-UP DESIGN: Customizable LED-backlit artwork lets you personalize the KidJamz for a unique design that’s fun for kids and easy to recognize in school; choose one of our pre-designed graphics and add your own text to create a completely unique design; multicolor LED lights with 8 color patterns illuminate the graphics on each ear cup, giving each KidJamz headphone a vibrant and unique style DURABLE & COMFORTABLE: engineered with fewer moving parts, padded earpads, and a flexible cushioned headband, KidJamz provide outstanding durability and a a comfortable and secure fit for boys and girls ages 4+; a built-in rechargeable battery provides up to 40 hours of battery life HYBRID WIRED & WIRELESS FOR MAXIMUM COMPATIBILITY: works with all Bluetooth audio devices as well as devices that use a standard 3.5mm (1/8”) headphone/AUX jack including Kindle Fire tablets, portable gaming devices, mp3 players, PCs, laptops, gaming consoles and controllers, and portable DVD players; 3.5mm audio cable included BUILT-IN HEADSET & CONTROLS: Integrated microphone can be used for online learning, video chatting, gaming, and phone calls, while the built-in controls let kids adjust the volume and control media and phone calls without reaching for their phone or tablet each time