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, Direct thermal, 203 x 203 DPI, 152 mm/sec, Wired & Wireless, Gray Zebra ZD420. Print technology: Direct thermal, Maximum resolution: 203 x 203 DPI, Print speed: 152 mm/sec. Connectivity technology: Wired & Wireless, Ethernet LAN, Bluetooth, Bluetooth version: 4.1, USB port. Product color: Gray