Blog: Andreas Känner


This is a time-lapse video of the "Wundrwatch" watch from

I measured this watch:

The Wundrwatch is a fairly precise 24 hour watch. The standard deviation is close to a minute. This is the best result so far for a 24 hour watch. I like the anti-reflective glass and the clean dial. Therefore the watch is easy to read.


Luch One Hand

This is a time-lapse video of the "Luch One Hand" watch from

The Luch One Hand is a mechanical watch. It is the most precise watch I have measured so far. The Luch is easy to read, not so bulky (diameter - 36 mm) and very inexpensive. I can recommend this watch to anyone interested in a one hand watch. You can have a Luch watch with your own dial design if you want. Just ask the seller:


Now showing the standard deviation

From now on the videos show the standard deviation instead of the deviation range. I think the standard deviation is more comparable. From Wikipedia: "In statistics and probability theory, the standard deviation (SD) (represented by the Greek letter sigma, σ) measures the amount of variation or dispersion from the average. A low standard deviation indicates that the data points tend to be very close to the mean (also called expected value); a high standard deviation indicates that the data points are spread out over a large range of values."

Today I will upgrade all videos.

Wancher Cifra

This is a time-lapse video of the "Wancher Cifra" watch from

I have to thank Taizo Okagaki from for his support. The Wancher Cifra is the first automatic mechanical watch I have measured so far. This watch has a crisp and good readable dial. A sharp and fine needle arrow shows the time. The back has a transparent glass inlet, so you can see the movement through it. Head over to to read more about this great watch.


Slow Jo

This is a time-lapse video of the "Slow Jo" watch from

I ordered this model:

For me the deviation range of the Slow Jo is ok. I like the anti-reflection coating which makes the watch easy to read. The only thing I have replaced is the thick leather strap. It looks very good but because I sit the whole day in front of a computer I am more comfortable with a 22 mm wide NATO strap (in black). The NATO strap does not have such a big buckle and is less thick. An alternative would be a Slow Jo with a thin black leather strap:
slow Jo 05 - Black Leather, Silver Case, Silver Dial - Swiss Made