This Trakxy stylus pen is designed for use with Microsoft devices, specifically the Microsoft Surface Book, Surface Pro, and Surface Pro 3. It is compatible with several models of these devices, including the Surface Pro X, 9, 8, 7, 6, 5, 4, 3, and the Surface Laptop 5, 4, 3, and 2. This black stylus pen is ideal for taking notes, drawing, or navigating your Microsoft device with precision. Its sleek design and easy-to-use features make it a great addition to your Surface accessories.