This Review Title is A little quieter but no difference in size between the guards and the content is: They were more quiet than my Wahl clippers for sure. But I didn't notice a difference in length between the guards. I used a 3 on the back/sides and a 12 on top on my sons head and it looks like exactly the same length. He just has a closely buzzed head now which makes him look like a cancer patient or something :/.There are other information for this review, one is This reviewer did purchase it and the other is 0 people think this review is helpful.