1 star - Bought this in-store. When I bought it in August, the cool ambient room temperature kept it warm and worked well. As summer came it started to overheat and stops working every so often that I had to have a fan blowing at it to keep it running. After 6 months it has stopped working. Not what I have expected from an expensive equipment. I would not recommend this device to anyone (except maybe the Eskmos or Yeti).