e-pens Mobile Notes Pro
The folks at e-pens have built their digital pen for easy functionality and effortless syncing capability with a whole list of apps. After all, that's what a smart digital pen is supposed to do, allow you to write anywhere, anytime to create a clean, easy to read text document. The Mobile Notes Pro offers all of this at a price that is on the higher end of the spectrum yet competitive with the other quality products available.
This pen works on any type of writing paper or surface; you simply clip the infrared receiver to the top of your page and it automatically begins to receive and recognize your writing from the pen. You will need to be delicate in making your mark, as the receiver is very sensitive. Knocking it around or otherwise disturbing the sensor will affect the resulting text, so you will want to be careful when you're writing or sketching; the Mobile Note Pro works great for both.
Make notes or drawings appear digitally via Bluetooth connection in a number of apps such as Evernote, Dropbox, Onenote, even Facebook. You have the choice of inputting directly into the apps or importing afterward. Eight hours of battery life when not using Bluetooth, and a lightweight design make this an easy choice for our list.