LD Remanufactured Ink Cartridge Replacement for HP 81 C4934A (Light Cyan) Page Yield: 1,000* | Shelf Life: 12-18 months *Average cartridge page yield in accordance with ISO IEC 24711 The use of remanufactured cartridges and supplies does not void your printers warranty All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee This remanufactured cartridge comes equipped with an ink indicator chip that accurately tracks your ink level and communicates with your printer to be sure you are receiving the best quality print possible. For use in the following DesignJet printers: 5000 Dye, 5000 Series, 5000ps Dye, 5500 Dye and 5500PS Dye