These KidzGear headphones have been made using the same high quality components found in standard adult headphones, but feature built-in Volume Limit Technology for children. Total control A built-in volume knob enables you to adjust the volume range to a suitable level. And the KidzControl Volume Limit Cable (included) means that the headphones will easily connect up to an MP3 player or any other portable music source. Comfortable fit Custom designed to fit children aged two and older, the headphones are light weight and comfortable so are perfect for taking out when exploring.