Product Name: Smart Gadget Compatible HP 564XL Ink Cartridge Package Contents: 2xPhoto Black Page Yield: Colors: 750 pages @ 5% coverage per color unit Compatible for: DeskJet 3520 3522 Officejet 4620 Photosmart 5520 7525 6510 6515 7520 D7560 Printer ADVICE: If you are not sure which toner, ink or drum unit cartridge the printer requires, please check the label of your old unit cartridge. It will help you see the correct required cartridge model. WARRANTY: 30 days for a refund or replacement from the date of purchase ? If you have any questions or concerns please do not hesitate and send us an email. A customer service representative will gladly assist you. ? The use of compatible or replacement cartridge supplies does not void your printer’s warranty. ? For customers outside of the 48 continental US states that would be using a third party forwarder to receive products, we recommend not to place an order. ? We only ship to the 48 US continental states and anything that ships outside these states are no longer covered by our warranty.