I have been using the Braun 7 series razor for over 5 years. During this time, I changed the grid, 2 times, although the manufacturer recommends changing it after 18 months. When you need to change it is clear right away - after shaving, skin irritation begins, as soon as you put in a new nozzle, everything becomes normal, i. E. one nozzle is enough for 2-3 years. Pros: Very high quality product Should be changed every 2-3 years Different cons: For this money you can buy a new inexpensive razor of average quality

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