In the various evaluations, one goes from very satisfied to very disappointed. I am one of very satisfied because this pendulum thermometer meets my need, I use it on a motorcycle, it is pretty small, easy to fix and remove an unrivaled value for money. I had previously looked in stores (Green Fire, Norauto) without finding equivalent. I confirm little less marked as the opening of the battery compartment hard enough and long delivery time. I ordered 19 November and I received yesterday the thermometer 8 Jan. As against the very commercial side is the supplier followed by exchange of mails is reassuring, it does not just have to be pressed.