Epson Alarm Clock No.27 XXL Ultra Ink Cartridge - Black Save ink with individual ink cartridges - only replace the ink used Easily identifiable Alarm Clock image Approx 2,200 Pages Smudge, water, highlighter and fade resistant Compactible with WorkForce WF-7210DTW, WF-3640DTWF, WF-7110DTW, WF-3640DTWF, WF-7720DTWF