I too received my Kanger K1 box yesterday one day earlier than expected. I only had a few minutes to put it through it paces last night. First impressions are- well built with good fit and finish, Heavy and not a pocket device, buttons do rattle a bit. My biggest concern is that I had the fire button stick ON several times during my brief test. Anyone else ??? This is not a desired option and will have to see if it continues. Looking forward in installing the EScribe firmware and tinkering tonight.