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The WorkForce ET-4550 EcoTank wireless all-in-one offers revolutionary cartridge-free printing with easy-to-fill supersized ink tanks. It includes up to 2 years of ink in the box1. That’s an incredible amount of ink — enough to print up to 11,000 black/8,500 color pages2, and equivalent to about 50 ink cartridge sets3. The ET-4550 delivers an unbeatable combination of convenience and value1. Plus, save up to 80 percent on ink with low-cost replacement bottles4. Powered by PrecisionCore®, this printer delivers high-speed, laser-quality black text. Plus, it features auto 2-sided printing, 150-sheet paper capacity , and wireless printing from tablets and smartphones5.