MicroComb Technology: - MicroComb catches and feeds more hair into the cutting parts offering outstanding performance on 3-day beards and great skin comfort. SensoFoil: - Optimized foil cuts hairs more easily while being smooth to the skin. For series 3 shavers Suitable for: - CruZer Clean, Series 3-3040s, 3-300, 3-3010, 3-3020, 3-3030, 3-3040, 3-3045, 3-3050cc, 3-3070cc, 3-310, 3-320, 3-340, 3-350, 3-350cc