<P> 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 . </P> <P> The first Surface Pen was introduced in 2012 alongside the Surface Pro, which uses Penabled technology designed by Wacom . It features one physical button on the side to simulate a right - click when the pen comes into contact with the display, as well as an eraser tip at the top of the Pen that removes ink strokes when it comes into contact with the display . It was bundled with the Surface Pro and Surface Pro 2, but is not compatible with other models . Although the technology was deprecated with subsequent generations and is now branded as "Pro Pen", it can still be purchased as an accessory for the Surface Pro and Surface Pro 2 as well as other Penabled - compatible devices such as those from Lenovo ThinkPad lineup . </P> <P> A new version of the Surface Pen was launched in 2014 with the Surface Pro 3 . Based on technology developed by N - trig (a separate company at the time, though subsequently acquired by Microsoft), the Surface Pro 3 version lacks the eraser tip present in the previous generation; erasing is done by drawing over the ink strokes while holding down one of two physical buttons on the side, above the button used for right - clicking . A third button, located in place of the eraser tip, sends a Bluetooth signal to a paired Surface PC which instantly opens OneNote, even when the device is locked (although advanced editing functions are disabled in this case). Unlike the Wacom - powered Surface Pen, it requires two batteries: one AAAA battery for stylus operation, and two size 319 coin cell batteries for the top button . The pen is included with all Surface Pro 3s but is also compatible with and available as an optional accessory for the Surface 3 . It is also compatible with all subsequent Surface PCs, which uses the same basic technology . Surface Pro 3 Pen is able to detect 256 levels of pressure on its tip . </P> <P> Model numbers are 3UY - 00001 (Silver), 3UY - 00012 (Black), 3UY - 00021 (Red), 3UY - 00030 (Blue). </P>

Is surface pro 3 pen compatible with surface pro 4