Page Yield*: 21,500 For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) Our compatible replacement for the Kyocera-Mita TK-3122 toner cartridge is manufactured 100% brand new with a new chip. Compatible with the following printers: FS-4200DN Color: Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.