The MEE audio KidJamz KJ45 headphones utilize a built-in volume limiter to maintain the sound pressure level (SPL) below 85dB, keeping young ears safe and helping build lifelong good listening habits. A built-in switch allows the volume limiter to be disabled temporarily so KidJamz can still be enjoyed in noisy environments, such as while traveling. Works with all devices that use a standard 3.5mm (1/8") headphone/AUX jack including Kindle Fire tablet, iPhone/iPad/iPod and other phones/tablets (3.5mm adapter may be required depending on version and available connector), portable gaming devices, mp3 players, PCs, laptops, computers, gaming consoles and controllers, and portable DVD players.