Series 3 320 S-4 Cordless Electric Shaver Employs Braun Technology for a Close and Comfortable Shave Shaving will never again be a chore, when you are using the Braun 3 Series 320 S-4 men's shaver . It is designed for the man who ref uses to trade comfort for affordability. The 320s offers 30% less skin irritation than more expensive rotary systems featuring built-in skin conditioners. This shaver is designed to perform for seven years and features a triple-action cutting system for a heavier beard. The series 3 320 S-4 cordless electric shaver has Senso Foil technology in which a unique foil pattern captures hairs growing from different directions for a closer shave in fewer strokes, It also has 3-stage cutting system comprised of twin foils and integrated cutter to shave long hairs and stubble progressively closer. The shaver also features a precision trimmer with extension for precise styling of mustache, sideburns and neck.