The Epson 102 EcoTank black ink cartridge yields approximately 7500 pages and is compatible with the EcoTank ET-2700 printer, among other models in the same range. It's 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. It is compatible with the Epson EcoTank ET-2700, ET-2750, ET-3700, ET-3750, and ET-4750 printers. It's a preferred option for those who print large volumes of text at home or in the office and want to keep the cost per page as low as possible.