Page Yield*: 755 For best results, store in a cool, dry place. Use within 18 months of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) The ink monitoring chip on this compatible remanufactured Epson T127120 is the original chip which has been reset to provide accurate ink monitoring. Compatible with the following printers: Epson WorkForce WF-3530, Epson WorkForce 545, Epson WorkForce 840, Epson WorkForce 845, Epson WorkForce WF-7010, Epson WorkForce 633, Epson WorkForce WF-7520, Epson WorkForce 60, Epson Stylus NX530, Epson WorkForce 630, Epson WorkForce WF-3520 All-in-One, Epson WorkForce WF-3540 All-in-One, Epson WorkForce WF-7510, Epson WorkForce 635, Epson Stylus NX625, Epson WorkForce 645. Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.