Huion Pen Monitor 21.5 Inches Pen Display Tablet Monitor with IPS Panel HD Resolution - GT-220 (Sliver) GT-220 Silver version. Huge work surface - 21.5'' full HD screen with 16:9 aspect ratio, gives you a huge area for greater productivity With 1920 x 1080 high screen resolution and IPS panel you'll get consistent, accurate color from different viewing angles, no more distorted images when doing detailed work 2048 levels of pen pressure sensitivity makes you control the thickness, transparency, and color of the line more responsively and naturally OS Compatibility - Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Windows 2000, Mac OS X 10.8.0 and above One Year Warranty, *5% restocking fee as well as return shipping will be borne by the buyer if return without hardware defect within 30 days of order