Bulk Headphones 10 PackEach individually packaged, use 40mm Neodymium driver offers a high-quality sound, hear clearly and loudly than ever before on the online course Built in MicrophoneDesigned With a high-sensitivity microphone design,whether you are using a mobile phone or a tablet, you can achieve better voice pickup Kids Strength TechChoose adjustable, swivel-cup headphones with above-average durability; We make comfy, cushioned, on-ear headphones with materials selected to withstand the energy of young students ComfortableWe improved the softness of the earmuffs, use better earmuffs sponge and pu leather,it can block out ambient noise Durable & Wide CompatibilityWe widen and thicken the wires, Standard 3.5mm audio plug with Mic ideal for classrooms, libraries, art galleries, museums, kindergartens, health centers, computer classes, remote learning, online studying, watching movies & listening to music