I am stating the following jokingly. I have found the Finder 166 to be much better built than the usual Paranormal. Finally something went wrong! The tiny abalone piece fell off Amazingly I found it in the carpet in less than 5 minutes. Unfortunately I glued it on crooked lol. So now the Fire button feels kind of lousy. Honestly though I wonder how long this will last. So far about 8 months. Exceeding any Lost Vape or Wisemec product I have owned many of. I think you can only get the 3 battery one now but I personally highly recommend it. Of course YMMV. Many had Lost Vape last 2+ years and the Finder break in a day. These Mods are odd little things.