Return Program toner cartridge is essential to Lexmark print system performance. Unison toner consistently delivers outstanding image quality, ensures long-life system reliability and promotes superior sustainability - all in an innovative, shake-free print system. Cartridge is compatible with Lexmark cx725de, cx725dhe, cx725dthe, cs725de, cs720de, cs720dte and cs725dte. Genuine Lexmark supplies are engineered to work best together with your Lexmark printer, delivering excellent print quality from the first page to the last. Return Program toner cartridge is a patented device that is sold at a special price subject to the restriction that the developer unit may be used only once. Following the Initial use, Return the developer unit only to Lexmark for remanufacture and/or recycling. Keep up-front costs low and quality high with genuine Lexmark cartridges. Perfect for low-volume printing, standard-yield cartridge yields approximately 3,000 pages.