A real eye-catcher! This TFA Aussenthermometer convinced me. Since 2 years, it is now in continuous operation at the living room window. After I had this thermometer about 5 months in operation unfortunately the lights failed. Somehow it worked very idiosyncratic & sporadically. After much tinkering I exchanged simply times the "normal" battery and lo and behold - 1A. Figures from the thermometer were now again be seen much more clearly what had me beforehand not really noticed. The charge status did not seem to be the best in the delivery. I actually went out of the lighting on the rechargeable cell is fed - But the fact is that I can & impeccable record full operation since then (1.5 years). The temperatures are very accurate. Reading can take place even over long distances so that I can read the temperature in the morning after getting up, overlooking the entire hall. I can not keep silent but also that I had to return a second unit, which is in my family in action, after only 3 months. There were also problems with the lighting but where the error was in the electronics. The exchange worked here but smooth and very fast. Even the holder could remain on the plate and could not be removed. Note: When cleaning the window pane, make sure that you really pushes the thermometer back into the lead. A fall from a low height can already lead to the total loss of the device. Overall, I am convinced of this unit and it would buy again!