Surface Pro Signature Type Cover goes beyond traditional keyboards to add a touch of warmth and elegance to everyday tasks Constructed with Alcantara, a luxury fabric sourced from Italy, it features a soft, velvety feel It coordinate with Microsoft Surface Pen and Surface Arc Mouse.Interface:Magnetic Our Signature Type Cover is Ultra-slim, yet performs like a full, traditional laptop keyboard Incorporates the best of Microsoft technology, including LED backlighting Supported platforms : Surface Pro, Surface Pro 4, Surface Pro 3