Product review (5 stars): So far, it works fine
I haven't had this thermometer very long so I can not give much of a review, on durability and battery life.  The unit is plastic and has a very nice design.  Magnet, wall mount and pull out for stand alone type configurations.  It shows temp and humidity inside the home and temp outside.  I'll wait until through winter to see how well it records temps when it is -17 for a week at a time.  That should also show the durability of the rechargeable battery on the sending unit outside.  The numbers are large on the screen, which is nice and readable across the room and there is also a nightlight for viewing at night, that automatically shuts off after a short tome.