The Sonic Mini 4K is the most consumer-friendly 4K 3D printer on the market, offering ultra-high resolution with 722 PPI, the highest PPI ever! The printer offers 4K resolution printing at 35µm with a large printing area of 6.1”, producing highly detailed 3D models that match your exact design, regardless of the size of your model. Using Monochrome LCD technology, the Sonic Mini 4K is able to print one layer in ONLY two seconds! The LCD screens work for over 2000 hours and Phrozen provides a free 3-month warranty as a guarantee. Visit http://www.usnetads.com/view/item-131186717-sonic-mini-4k.html