I have to get a Vileda Windomatic product under test and test it extensively straight. The putting together is simple and works well without the instructions to read. Then the device needs to be charged first for 6 hours - which is unfortunately a little long. Then you can get started. Washing windows as usual and then aspirate the Windomatic. That works really well and succeed fairly streaks. Significantly better than with a normal puller. It is also a clean work, because the water is sucked out and not down down dripping like a stripper. I highly recommend this product. Only the charging time I find too long.