Within 18 months, Braun shavers cut an average of 6,000,000 hairsthat comes with some gradual wear to the cutting parts, which can lead to a less comfortable shave. Thats why Braun recommends changing your shavers foil and cutter block every 18 months, to get your shaver back to its best. Take care of your shaver, and itll take care of you! This replacement swivel head adapts to your facial contours, and with its pressureminimising SensoFlex system, delivers a comfortable shave everytime. Easy to switch over, easily attach your new shaver head just by clicking it on. Features and Benefits 18month lifespanTo maintain your best shave, we recommend replacing your shaver head every 18 months. Skin comfortThis shavers swivel head adapts to your facial contours, for a comfortable shave you can trust. Close and sensitive shaveWith this shaver heads pressureminimising SensoFlex system (Series 6 models). VersatileCompatible with Series 5 and Series 6 (new generation) e