Seems to be well built. My only problem with it was none of the manufacturers settings were in it so got all the settings from a friend and plugged them in. Also it had a wonky battery discharge profile so I was able to download a good one and install it through Escribe. It was showing batteries empty when they still had 3.69v. That is no longer a problem. It is dead accurate in TC now and battery bar working properly. If you don't have an understanding of Escribe you will by the time it is working right. HCigar sent them out with the generic settings from Evolve. But other then that it seems like a great mod just a little work to get set up. You can use it the way it comes but it won't be accurate till you do a little work.That's why I gave it 4 stars instead of 5 once it is dialed in it is a 5 star mod.