Wide Compatibility Compatible with smartphones, cellphones, laptops, PCs, CD players, tablets, MP3, MP4, and other audio 3.5mm jack devices. Safe Hearing Protection Built-in volume-controlled technology that ensures the sound is less than 85dB, which is within levels recommended safe for young children's eardrums and inner ear. Foldable and Portable Folding design minimizes the storage space, not only for saving space but also for portable to carry when traveling or work out. Stereo Sound With premium made 40 mm driver units, the kids headphones have a full, balanced stereo sound to allow kids to get and immerse in every detail of the audio. Comfortable Wearing Equipped with soft ear cushions and lightweight design to provide premium comfort during long time listening. Suitable for music, work, play games, travel, especially for school children to study. Perfect Gift Choice Nice color is very attractive for small children. The headphones are perfect for birthdays, Christmas, All Saints' Day and other celebrations. Two removable decorative cat ears make children even more fun.