Features:Compatible for HP OfficeJet 6220 6800 6812 6815 6820 6822 6825 OfficeJet Pro 6230 6830 6835 6836 printers.Package Contents: 1 x Black 934 XL, 1 x Cyan 935 XL, 1 x Magenta 935 XL, 1 x Yellow 935 XL (4 cartridges in total).Print More with XL: Up to 1,200 pages per XL Black, 825 pages per XL color cartridges (Cyan, Magenta, Yellow).Ink Level Tracking Technology: Smart Ink cartridges are equipped with smart chip that allows you to monitor current ink level and order a replacement pack in time.Easy to Install and Use: All compatible printers instantly recognize Smart Ink cartridges and work flawlessly. Specifications:Model Number: 934XL 935XLColor:Black Cyan Magenta YellowInk capacity:BK 58ml, C M Y 16mlWith chip:YesFor use with printer:For HP Officejet 6812 e-All-in-OneFor HP Officejet Pro 6830 e-All-in-OneFor HP Officejet 6815 e-All-in-OneFor HP Officejet Pro 6835 e-All-in-OneFor HP Officejet Pro 6230 e-All-in-One Note:No retail package.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you. Package includes:4PCS x Ink CartridgeWhen shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it