You get what you pay for [SEP] I've only had this for a couple of weeks now and for the most part and considering the money I spent on it, it is okay.  It charges via USB so no batteries needed or a cord.  I just plug it into my computer and let it charge.  The only problem I have had so far is when I went to take the cap off of it, the blade itself got stuck inside the cap.  Luckily, they sent an extra blade with it.  I was finally able to get the blade out of the cap but unfortunately, it broke.  I don't think it will last very long.