Minecraft kids wireless headphones in green featuring V5.3 Bluetooth technology with built-in microphone, these headphones are suitable for kids aged 3 upwards. These headphones can be used with all your favourite devices (i.e. use with tablets, handheld games, learning devices, gaming devices*) when wired mode, using a 3.5mm 3.5mm universal jack connector audio sharing cable (included). *Note, all function buttons and mic are deactived when the headphones are wired mode.(using 3.5mm universal jack cable) all function buttons and mic are only work wehn the headphones are wireless mode only. For some of mobiles may not be able to use some or all functions depending on the specifications of the devices itself. Ensure that your Bluetooth enabled device system is up to date