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 ZD620 Linerless, Thermal transfer, 203 mm/sec, Wired & Wireless, Grey Zebra ZD620 Linerless. Print technology: Thermal transfer, Print speed: 203 mm/sec. Connectivity technology: Wired & Wireless, Ethernet LAN, Bluetooth, USB port. Supported paper width: 15 - 118 mm. Product colour: Grey