Braun Series 7 70S Electric Shaver Head Replacement Cassette Silver Over 18 months, your Braun shaving cassette cuts over 6,000,000 hairs. Over time, the cutting parts naturally start to wear down. We therefore recommend replacing the shaver head every 18 months, to keep your shave to a few strokes and reset your electric shaver to new. By routinely replacing the shaver head, your shaver body will remain in peak condition for years to come. PEAK PERFORMANCE: To maintain your best shave, we recommend replacing the shaver head every 18 months EFFICIENT SHAVING: Over 18 months your Braun electric shaver will cut over 6,000,000 hairs, gradually reducing cutting performance SIMPLE REPLACEMENT: easily attach your new shaver headjust by clicking it on CLOSE SHAVE:One small investment, and your shaver is reset to new QUALITY CRAFTSMANSHIP: 100 made in Germany