Produce professional-quality documents at a better value for frequent printing with an HP 934XL ink cartridge. It'll deliver consistently durable prints that resist water and last for decades. HP XL High Yield inks can help you save up to 40% per page compared to standard single inks. This XL cartridge will print up to 1000 A4 pages. Compatible with: Officejet: 6220, 6820, Pro 6830