[Silver 73S]
Within 18 months, an electric razor braun shaves an average of 6,000,000 hairs. This leads to gradual wear of the cutting edges, which can result in a less comfortable shave. Therefore braun recommends replacing the foil and knife block of the mens electric shaver every 18 months to keep performance at peak performance. Take care of your electric beard razor and it will take care of you.
Braun Series 7 73S Electric Shaver Head Replacement - Silver