Draw with any pen thanks to the removable ring that gives to your physical tool a digital power. Use any kind of paper to draw with the Slate, even a sketchpad (up to 7mm of thickness). Use the Slate connected to your device to see your drawings in live, or in screen less mode to take it and draw everywhere thanks to its integrated battery. Compatibility : iPad 3, iPad 4 | iPad Air, iPad Air 2 | iPad mini Retina, iPad mini 3, iPad mini 4 | iPad Pro | iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone 7, iPhone 7 Plus | Windows 7 or later | Mac OSX Yosemite 10.10 or later | Android Smartphones - Not Released Box Contains : 1 Slate; 1 iskn black Pen with integrated ring; 1 pencil with removable ring (S size); 2 clips; 1 sketchpad; 1 USB cable