The lock is closed and sent without packaging. In order to open the lock the first time, I have only tried to "0000", "1234" and other simple combinations set on the side, as I was used to from another castle that. Without success - after 20 minutes I was almost ready to return the thing. In my desperation I then looked at me on YouTube videos, how to break those locks. These videos I have not understood (and I suspect that it is so easy not going to the cracking) - this is but I noticed in the video that the combination has not been set on the page, but the front of the castle. In fact, you have to at this ABUS lock the combination "0000" Set the front where a line is drawn that should illustrate this.
In operation, the castle is now almost every day for two weeks, and works well. The only shortcoming is that you can not close the lock, if the wrong combination is set. That was another castle, which I had. Therefore, a star deduction.
Update after more than 2 1/2 months, at a frequency of use of 4-5 times a week: Still top, will continue to function without problems.