The Epson 104 EcoTank ink cartridge, in yellow, yields approximately 7500 pages and is compatible with EcoTank printers ET-2710, ET-2711, ET-2712, ET-2714, ET-2715, ET-2720, ET-2726, and ET-4700. It is part of the Epson EcoTank system, where ink is replenished via dedicated bottles directly into the printer's ink tanks, instead of disposable cartridges, significantly reducing the cost per printed page and plastic consumption over time. The bottle has a nozzle designed to minimize spills during refilling, making the process simple and clean even for those who have never refilled this type of printer before. It is a preferred option for those who regularly print color documents and have one of these EcoTank printers at home or in the office.