I just got delivered the trimmer and tried immediately. I have the essay for the eyebrows also needed and made it to 2 mm, you can ask him to 4 mm. I have now beautifully cut eyebrows, because my eyebrows always grow very fast and long. I am very pleased. Furthermore, I have also shaved the sides of the cheeks, the little hairs, natürllich without attachment, which also worked well. I can only recommend the trimmer safely. Suuuper!