A:AnswerThe Stylus Pens will only work with certain laptop models. The best way to check is to type "about" in the Windows 10 search bar, on the bottom left of the desktop. That should bring up a screen that lists the features of your computer. There will be an option that says Pen and Touch support. If that option says pen support, the HP Stylus should work with your laptop.
A:AnswerThe Spectre x360 13-4193dx is not compatible with this pen. But it would work with either HP Active Pen (J4R51AA) or 773175-001 or HP Pro Tablet Active Pen K8P73AA or 798051-001.
A:AnswerThe number of pressure levels has not been specified, but it does support tilt shading. The user manual can be accessed here: http://h10032.www1.hp.com/ctg/Manual/c05941803