The Epson EcoTank L3550 is an A4 3-in-1 colour ink tank printer for homes and small offices that want wireless printing at a very low cost per page. It prints, copies and scans, with ink stored in refillable tanks on the front and topped up from bottles instead of cartridges. Epson rates it at up to 33 ppm black and 20 ppm colour in draft mode, and 15 ppm / 8 ppm on the ISO test, with a maximum resolution of 4800 x 1200 dpi and borderless 10 x 15 cm photo printing. The flatbed scanner scans at 1200 x 2400 dpi. Wi-Fi with WPA3 security plus USB lets everyone in the house print, and Epson Connect and Apple AirPrint handle printing from phones and tablets. The 100-sheet rear tray takes plain and photo paper from 64 to 300 g/m², and two-sided printing is manual. It has no display, using simple buttons instead. The unit measures 375 x 347 x 179 mm and weighs 4.1 kg, making it easy to place on a desk or shelf.