Get a perfect trim, time after time. The steel blades lightly brush against one another sharpening themselves as they work. This results in blades that are sharp as day 1 after 3 years of use. This all-in-one trimmer conveniently trims and styles your facial hair. Use the trimmer without a comb to get clean, sharp lines around the edges of your beard and neck. The trimmer's self-sharpening blades remain as sharp as day 1, even after 3 years of use.Remove unwanted nose and ear hair, easily and comfortably.