Surface Pen
The Surface Pen is an active stylus and digital pen, developed by Microsoft for its series of Surface computing devices. It is designed to showcase the pen computing capabilities of Microsoft's Windows 8/8.1 and Windows 10 operating systems.
The first version of the Surface Pen was introduced in 2012 with the first Surface Pro, which use Penabled technology from Wacom. It is bundled with the Surface Pro and Surface Pro 2, but is not compatible with the Surface RT and Surface 2.
A new version of the Surface Pen, based on technology developed by N-trig (which was subsequently acquired by Microsoft), was launched in 2014 with the Surface Pro 3. It is bundled with the Surface Pro 3 and Surface Pro 4, and is available as a separate accessory for the Surface 3 and Surface Book.