During 18 months, the components of your Braun product cut an average of 6,000,000 hairs Over time, the parts naturally wear down. We therefore recommend that you replace the shaver head every 18 months to maintain the shaver's effectiveness and make your shaver look like new. By regularly changing the shaver head, your shaver will function perfectly for many years. • Braun recommends replacing the shaver head every 18 months for continued excellent results • Over 18 months, your Braun shaver cuts an average of 6,000,000 hairs, tears and shaves with time worse • By regularly changing the shaver head, your shaver will deliver at the highest level for many years • A small investment to make your shaver like new • Made in Germany