From this company I'm better accustomed

I have good eyes, really. So I thought to myself: "Brennenstuhl exaggerate the people so bad it can not be?.".
However, it can. I can not read the number plate of a car 50 meters away, the symbols of this display.
The user experience is also a disaster, nothing is even halfway intuitive.

What this thing can: small performance measure, as it beats the competition field. However therefore is also a device to be "on" measured (timing) when it is not really gone but has drawn only very low standby power.

The worst thing for me is that the display always jumps to the display of the current tension. Incomprehensible. Such a device is set to work but a measurement / cost measurement and not to check whether the voltage is correct!

The use of button cells is - sorry - stupid. As if you could not use a normal AAA battery that charges itself during normal operation ... But the product developer would probably like to have 4.5 Volt internal operating voltage.

So a pretty half-baked and not practice-tested device, which has the image of the company Brennenstuhl badly damaged with me. At least it was cheap (though not award-worthy), so that the loss keeps so limited that the return is too stupid to me.