Compatible with: Epson XP Expression XP-520, XP-600, XP-610, XP-620, XP-800, XP-810, XP-820 This is the Compatible Higher Yield Version of: 273 T273020 Black Page Yield*: 500 For best results, store in a cool, dry place. Use within 18 months of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) All LD compatible and remanufactured cartridges are quality tested to ensure long-lasting use and bold, vivid print on every page Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.