So far, I can give a suggestion or a "no" feature
point:
Because the display is not lit up, we have to at night - when we our child,
which is just sick and we are glad that there is finally asleep - always the light
turn on when measuring and then complicated with a mobile phone
a little magic brightness.
We have chosen the brand, because they are more often seen in physicians - there
they are of course used only in daylight. For the end consumer, it would be
in my opinion but not a disadvantage, this 3-5 cents for Display Lighting
to invest in manufacturing.