Premium compatible toner for Lexmark T640, T640dn, T640dtn, T640n,T642, T642dn, T642dtn, T642n,T644, T644dn, T644dtn, T644n. Delivers consistent performance under a variety of conditions. Extra high-yield cartridge produces up to twice as many prints as standard-yield performance. Precisely formulated to create a clean, sharp image.
Manufacturer's one-year warranty.