Introducing SkinProtect Technology for a reliably clean shave that is gentle on the skin. A combination of 4D flex contour technology, Wet/Dry usability, and a new Anti-Corrosion Shaving System for a comfortable, clean shave every day. It features 27 self-sharpening ComfortCut blades made from surgical-grade hypoallergenic steel to resist corrosion, prevent impurities, and protect your skin. Rounded caps shield blades to gently cut hair just above skin level and help the shaver glide smoothly over your skin. 4D Flex Heads move independently in 4 directions to automatically adjust to the curves of your face, neck, and jawline. Pop-up trimmer for mustache and sideburns - Finish your look with the built-in trimmer. It’s ideal for maintaining your mustache and trimming your sideburns.