Genuine made by Canon high yield toner cartridge. Comes with a 6 month warranty. Page Yield is 4,000 pages. High yield replacement for the Canon E20 and E31 lower yield cartridges. For use in all of the following PC copier models, Canon PC-300, PC-310, PC-320, PC-325, PC-330, PC-355, PC-400, PC-420, PC-425, PC-430, PC-530, PC-550, PC-710, PC-720, PC-730, PC-740, PC-745, PC-770, PC-775, PC-780, PC-790, PC-795, PC-920, PC-940 and PC-980 personal copiers.