Have returned to Clatronic BSR 1283 robot vacuum cleaner after one day. The vacuum cleaner has absolutely no orientation, is very noisy, has a very poor cleaning performance and has in us can not dock again to the charging station. I now have an I-Robot 531 and must say that this sucker is absolutely great and not to be compared with the Clartronic. One must of course also fair to say that the I-Robot is a lot more expensive.