Absolute plus is the possibility to wash the device under water, which you should follow the procedure described in the manual. The nose / ear hair trimmer ER-GN-30K is slightly larger than the trimmer that I know so far from this product category, and is very comfortable to hold. When the battery's performance takes a bit off, but that is indeed in the nature of things. I am very pleased with this unit and have already recommended it twice successfully!
