This set of ink cartridges consists of a black HP 60 and a tri-color HP 60XL, both of genuine/original quality. The expiration date of the cartridges is in nov 2012. The ink cartridges are compatible with NEC and HP printers, specifically, the HP Officejet Pro 8600. The print technology used is inkjet and the colors available are black and tri-color. There is no manufacturer warranty for this product.