WORKS with any DIRECT THERMAL LABEL: VRETTI wireless shipping label printer can print any direct thermal label width between 1\"(25.4mm） to 4.5\"（115mm), max print width is 4.25\"(108mm) ideal for 4x6\" shipping labels,warehouse labels, barcode and id labels, package labels, mailing labels etc. PRINTING via USB CABLE: VRETTI mailing label printer support Windows, MAC and Linux system by USB connection. Before installation, please ensure the label printer is connected and turned on. If it shows \"The application can\'t be opened\" when you install MAC driver, go to \"System Settings\"-\"Privacy & Security\", slide down and click on \"Open Anyway\" FAST PRINTING &CLEARLY THERMAL PRINTER: Advanced Thermal Direct technology prints without requiring toner or ink. VRETTI wifi label printer for small business can print 72 labels of 4x6 size per minute. the therma label printer 4X6 supports up to 6IPS high-speed printing. With 203DPI resolution, you can print clear & easy to reads labels. Multi-Platform Compatibility: This label printer for shipping packages can work with sales and all platformsWireless Printing: vretti wireless thermal label printer print 4x6 shipping labels via 2.4GHz (NOT on 5GHz) WiFi at anytime for Windows 11/10/7/XP and MacOS , iOS (iPhone/iPad) and Android systems! Please download the \"wireless link\" app to get the ip address and use \"4barcode\" app to start print., including Amazon, Ebay, Shopify, USPS, UPS, Esty, PayPal, Poshmark,Pirate Ship and Canada Post etc.(Note: Please download the label to be printed on the corresponding platform before printing, then upload it to the editor APP \"4barcode\" for printing). › See more product details