I tested it on a beard of two days knowing that I have a very hard and very provided hair so as you say, many famous brand are so break the teeth or rather the blades. short razor has answered this incredible! it took some passages but it did the job. Now the negative points al careful opening of the heads, the pins that hold them are very fragile but once closed no problem, the head is very flexible and allows you to match the shapes of lovely face Charging Station is well thought it is equipped with suction cups allowing it well remained stable or you asked the for the price I said congratulations