Unreliable!

My husband has dubbed the band as pretty pointless. I would like to join after the trial period.
The idea of ​​a color-changing strip for baby bottles I find first quite well. Have the same system in our Breilöffeln (it will not stain the tip when the mash over 37 degrees has). This is quite useful, I do not have any spoons initial costs as porridge in the middle not so quickly cools as the edge region. For liquids which is then already different. Short shaken and it is everywhere the same temperature. So you can also estimate by hand or on the wrist-trick, the temperature in a bottle from the outside ....
Se you go even to the band but it's also much interpretation here.
During the test (significantly higher temperature), the tape is not has always colored white sustainably. In the test from tea glass, discolored quickly. When tested in the bath water (came steaming out of the line) remained the tape GREEN. Thus, it falls to me already made!

During the cooling phase the glass it slowly turned a green again ... only one type gray, then dirty mud-green and at the end of the initial phase.
But when the band knows a great deal more instead was green, I found the milk when drinking test but already almost too cold or not hotter than lukewarm far. Perhaps that was because of the glass bottle ... Where glass more heat stores as plastic?
Nor do they know, it is below 37 degrees. In young children also cold is often not well tolerated. Clear bellyache is perhaps first not as bad as being burned, but you estimate of the cold missing me personally. I like not only know when the beverage is too hot, but also when it's too cold again.
I will ultimately never completely rely on such 'extra features' and then check the milk or the tea ever again. Therefore ... it is, by the colored room and the unreliability of the results from the fact, not really useful for us. Too bad.