- Replacement sheet for Braun Series X: extend the life of your beard trimmer by replacing the sheet every 6 months - 4D sheet technology: 4 cutting elements, consisting of 2 side trimming zones and 2 central shaving zones; with 450 movements per second, it shaves close enough to look optimal - Skin protection: the caged sheet technology protects the skin from the sheet so you can shave and trim your beard comfortably even in the most delicate areas - Designed to last longer: the 4D sheet is made of 100% stainless steel and stays sharp for up to 6 months (based on two facial shaves per week; actual results may vary); easy to clean, for hygienic use at home - Precision and control, with confidence: the Flex pivoting head adapts to your facial contours to efficiently catch hair; the design of the 4D sheet allows you to shape and style your look