The innovative SmartTouch-XL incorporates the very latest in shaving technology. Thanks to the SmartTouch Contour-Following System, the entire head of the shaver as well as the individual shaving heads can move, closely following the curves of your face. The Speed-XL shaving heads provide 50% more shaving surface and have more blades to catch more hairs, and more slots and holes to catch shorter hairs, giving you a really close shave in fewer strokes with less irritation.