OTL Technologies Hello Kitty kids wired headphones are perfect for children aged 3-7 years as they are sound limited to 85dB (the recommended maximum sound limit for this age group). Note to grownups, these will sound quieter to you, but are suitable for young delicate eardrums Compatible with all devices using a 3.5mm jack, these headphones feature the iconic Hello Kitty ear shape on the top of both earcups and the headband is padded and adjustable. -Sound Safe: set to a maximum sound level of 85 db which is suitable for Children Aged 3-7 Years -Comfortable: adjustable padded headband and soft touch pads make for a comfortable audio experience -Connectivity: these wired headphones are compatible with all devices using a 3.5mm jack (an adapter may be required for certain models of tablet and smartphones)