Compatible with: WorkForce Pro WF-3820, WF-4820, WF-4830, WF-4834 Page Yield*: 1,100 For best results, store in a cool, dry place. Use within 36 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. Professionally remanufactured by LD Products. Epson is a registered trademark of SEIKO EPSON KABUSHIKI KAISHA Corporation and is not affiliated with and does not endorse LD Products. Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.