It works as it says it does. If I would have read the info for the computer I bought with this pen I would have seen that the computer came with this very pen. So, now I have two of them in case one stops working I suppose.
I use it for HP Omnibook FlipX 16inch Ultra 9 I use it very often, there is almost no delay while using, BUT the palm rejection for Onenote is not that great. Thats not a product issue, more of a software issue which Microslop needs to fix.