16 packs of 8 colors, each bulk headphone individually sealed Adjustable headband for comfort and secure fit 3.5mm plug and 4 ft. Cord, Upgraded thicker wires and plug to make more durable Designed for comfort and lightness, ideal for kids and adults Provide you with stereo audio clarity and nice sound quality CN-Outlet service: One year warranty, 8-year-old store services, if you have any questions, please contact us, we will solve for you within 12 hours give you the most satisfying reply.