Shredding now on the move

For security reasons I did not want to simply zerreisen important documents such as bank statements, but know for sure shredded.
The low-cost device works with 4 AA batteries or rechargeable batteries. Alternatively, it can be operated (not included) through an AC adapter.
It can grind up to two layers of paper at the same time, however, no paper clips, credit cards, etc. Due to the narrow feeder must A4 sheets but are folded. The strips are about 4mm wide, and as long as the original paper.
As a special bonus, there is a Brieföffnerfunktion that I have never tried.

Unfortunately, the collection tends obliquely feed the paper, which means that you have now and insert to reverse. In addition, accumulated over time much paper on the sides of the knife to which you must then laboriously herauspulen again.

After a few months and actually not many applications the average quality has fallen sharply. Often the paper comes down out almost uncut. But what more could you ask for less than 10 incl. Shipping costs?