Bought this product in Christmas gift, after 14 days of use, the steel roast started to be mounted on the brush. I recall this to the manufacturer who claim that I misunderstood the product when I did not wipe it after I rinsed it after brushing. Which is described in the manual only, not in the Quick Guide.
I have stated that it is a bad copy I received and that there are clear pores in the steel, which I find it hard to believe should have occurred after almost 14 days of use. So good and good, the product can not be rinsed in tap water, and rustproofing after 14 days of use is not covered by the warranty.
Otherwise, the product is functionally ok, but I thought that the battery life of the Li-Ion battery would be significantly better compared to the previous Thriump 9000, with an older battery technology, but I do not think it's significantly better.