LD Compatible Ink Cartridge Replacement for Brother LC209BK Super High Yield (Black, 2-Pack) Page Yield: 2,400 per cartridge | Shelf Life: 24-36 months per cartridge The use of compatible cartridges and supplies does not void your printers warranty These compatible cartridges are conveniently equipped with a smart chip that allows you to monitor and track your ink levels All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee For use in the following Brother MFC Printers: J5620DW, J5520DW, & J5720DW