Inclusions: Compatible Toner Cartridge Replacement for HP 49A Q5949A Black 4-Pack Compatible with: Printer LaserJet: 1320, 1320n, 1320nw, 1320t, 1320tn, 3390 and 3431 Page Yield*: 2,500* For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. *Average cartridge Page Yield* in accordance with ISO IEC 24711. *at 5% coverage (ISO/IEC standard) Color: Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.