Batman kids\\\' wireless headphones! Ideally for aspiring Batmen and Batwomen, these officially licensed, kids safe, Bluetooth headphones are the ultimate cool-kid gear. Featuring the latest Bluetooth technology with built-in microphone, these wireless headphones have a play time of up to 30 hours and a working distance of 10 metres. They are comfortable and adjustable and offer superb sound quality at a restricted limit of 85 dB which is the maximum recommended level for children aged 3-7 years. They can also be used with the wire attached if required. Official DC Comics / Batman Merchandise.