FantasyBuy CIS(Continuous Ink System) for HP printers with new OEM cartridge that are used in HP 60 cartridge such as Photosmart C4680, C4780 No more Ink Cartridges purchase, No more Cartridges replacement. Refillable ink cartridges/ink reservoirs enable countless refills. Pre-filled with 145ml Black & 70ml x 2 colors(Cyan, Magenta) & 105ml Yellow = 390ml Premium Dye Based ink. Quick and Easy installation. You will be printing in minutes. 80% Saving on individual Inkjet Cartridge. Permanent Chip. Auto-reset chipsets automatically reset the cartridges so there is no need to utilize a chip resetter nor take the cartridges out