Beats Studio Over-Ear Headphone - Blue (Refurbished) This Certified Refurbished product is factory refurbished, shows limited or no wear, and includes headphones and 3.5mm cable plus a 90 day warranty; Active noise-cancelling for planes, trains, buses, and other noisy settings. Please refer to the product description for detailed troubleshooting steps Item requires batteries. Collapsable design with detachable cord for compact storage. Over-ear cushioning provides superior comfort for hours of listening. Specifically engineered to bring out the best elements of today's rap and rock music.