ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR Epson EcoTank L310, Color, 5760 x 1440 DPI, 4, A4, 30000 pages per month, 33 ppm Epson EcoTank L310. Color, Number of print cartridges: 4, Maximum duty cycle: 30000 pages per month. Maximum resolution: 5760 x 1440 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 33 ppm. Duplex printing. Product color: Black