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, Direct thermal, 203 x 203 DPI, 203 mm/sec, Wired & Wireless, Black, Grey Zebra ZD620. Print technology: Direct thermal, Maximum resolution: 203 x 203 DPI, Print speed: 203 mm/sec. Connectivity technology: Wired & Wireless, Ethernet LAN, Bluetooth, Bluetooth version: 4.1, USB port. Product colour: Black, Grey