Compatible with: Expression: XP-850, XP-860, XP-950, XP-960, XP-970 XP Series: XP-850, XP-860, XP-950, XP-960 This is the Compatible Higher Yield Version of Epson 277 / Epson T277520 Light Cyan Page Yield*: 740 For best results, store in a cool, dry place. Use within 18 months of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.