By routinely replacing your shaver head, your shaver will stay at peak performance for years. Over 18 months your Braun electric shaver will cut over 6,000,000 hairs, gradually reducing cutting performance. To maintain your best shave, we recommend replacing the shaver head every 18 months. LONGER BATTERY LIFE*: Li-Ion Battery with a 60-minute life and 5-minute quick charge, this razor is powered to last. POWERFUL YET GENTLE: Welcome to the next level of shaving. This electric shaver has a 40 degree adapting head and floating blades to gently adapt to facial contours. Braun's unique Sonic Technology with 10,000 micro-vibrations capture more hair* while gently gliding over the skin. Braun Electric Razor for Men, Series 8 8457cc Electric Foil Shaver with Precision Beard Trimmer, Cleaning & Charging SmartCare Center, Galvano Sliver.