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 Zebra ZD420, Thermal transfer, 300 x 300 DPI, 102 mm/sec, Wired, White Zebra ZD420. Print technology: Thermal transfer, Maximum resolution: 300 x 300 DPI, Print speed: 102 mm/sec. Connectivity technology: Wired, Ethernet LAN, Bluetooth, Bluetooth version: 4.1, USB port. Product color: White