50 Packs of Black Wired Kids Earbuds, each earbuds is individually packaged Standard 3.5mm plug,the cable uses TPE material for softness and durability Comfortable Fit: Ear earbud of student headphones are made of soft silica gel pads for a comfortable fit;and don't have a built-in microphone;Providing clear sound that does not feel jarring and is suitable for your everyday Compatible with 3.5mm jack devices that work with most phones,computers,laptops, fitness equipment and are a good choice for classroom use and school testing,centers,museums,hotels Yoley After-Sales Service: All of our products come with 1 year warranty and quick response customer service,if you have any questions when using,feel free to contact us via email or through the contact information on the instructions.