Measures well but is not completely sealed.

The Wine Breather (although I actually see the main feature rather than wine thermometer) of KooPower is a great thing. On the one hand it oxygenates the wine when pouring (makes through discreet gurgle noticeable), on the other hand one can easily read the temperature of the wine (displaying the recommended temperatures depending on the variety, however, printed a little small. There would possibly. An imprint on the side been a little better.), and the wine refrigerator ripe close (with a Gumminöppel which however may be lost, since it is quite small and not permanently connected to the device). But beware: The device closes the bottle is sealed. So it is not very close. A lying down, or even upside down bottle is not drip-free possible, at least for my device and my wine bottles. But that's when other devices of this type also impossible to achieve, especially since it is supposed to be so suitable for carbonated beverages such as champagne. In this respect I would like for it to give any star deduction, but to point it clearly!
For me, however, the thermometer is the most important aspect and that is fine.
Due to the length (short) the measuring rod to a use in shorter bottles is possible. Only at very high bottles, it may happen that about the last quarter of the bottle contents can no longer be measured, since the measuring rod is not quite as long. But also the use in slightly smaller bottles possible (a Piccolo but this is I think a Bocksbeutel should be feasible, logically, not! But as the thermometer can then yes just purely as short. Since indeed makes a "resealing" not necessarily meaning !
Especially, if you take opens a bottle of wine, this thermometer is a very meaningful thing, because you can enjoy the wine so perfectly!