Product review (4 stars): Not bad, but......
Not bad, but a few things could be improved. The battery cover is prone to pop open from time to time. The on/off, reset and F/C buttons on the back side are too "squishy" and usually require a pencil tip or fingernail to activate. It runs on the batteries for a long time. I just leave it on constantly with no problems just like a battery operated watch. For the $$, I do not regret my purchase.