Switchable Volume Limit: To better fit different situations, the kids headphones are distinctly designed with volume limit switch of 85dB/ 94dB, with which kids can flexibly adjust the volume limit in quiet or noisy envioment; But don't worry, even at the maximum 94dB volume limit, kids' hearing will not be hurt | Indispensable School Supplies: With built-in Stereo Microphone, suitable for computer class or labs, compatible with devices with 3.5mm audio jack such as iPhone, androids, iPad, iPod, laptops, tablets, computers, Mac, etc. Support sharing the same device with classmates or friends | Sensible Comfort: Enlarged, thickened, soft and plush ear muffs fit kids’ ears comfortably; Head beam with soft cushions makes no pressure on kids’ head; Adjustable headband with sturdy material suits for different-aged children | Enhanced Durability: Reinforced cable made of nylon fabric is rugged and durable enough to resist kids’ rough handling; Built-in microphone and wired control allow kids to achieve hands-free calling | Ready for Travelling: Collapsible design makes these kids headsets fold up easily, suitable for storage in backpack, desk at school or suitcase; Carry the lightweight headsets to school, camping, hiking, and other outdoor activities