Review (4/5): great pen but to thick
this pen is very well constructed, has great quality but its a little bit thick and you can struggle getting used to its size, the controls are pretty easy to use it has 3 buttons, on/off and increase decrease voltage.
I had a little bit of hard time adjusting to the size you have to consider the wrapping tape and or plastic bag to the pen which adds another layer ( if you what to have it protected)
If you don't have big hands you might struggle but overall this pen is a very good acquisition for any person either for practice or work its a solid buy.