SKINSAFE TECHNOLOGY: The Lawn Mower 5.0 Ultra’s SkinSafe technology* doubles down on comfort with a built-in metal guard that acts like a comb. Thoughtfully designed at a precise distance from the guard to help reduce nicks and cuts. *SkinSafe technology does not guarantee cut protection. | SNAP-IN BLADE MODULE: The snap-in ceramic blade module is compatible with all The Lawn Mower 5.0 Ultra. When replaced every three months, you can keep your trimmer running smoothly and efficiently. Because it’s light years beyond other trimmers, The Lawn Mower 5.0 snap-in blade module creates grooming experience like no other. | HOW TO USE: To replace the trimmer blade on The Lawn Mower 5.0 Ultra, push the bottom of the blade head with your thumb in the direction of the arrow to snap it out. Then, insert the lug of the new blade head into the slot in the top of the trimmer. Then, press it back until it snaps in place. | WHY WE CREATED THE REPLACEABLE BLADE: Who wants rusty, dirty blades that can overheat? No one. Which is why we created the snap-in ceramic blade module. Its superiority and ease of use over outdated trimmer blades is clear. Just snap the old one off and snap the new one in, giving you a brand new trimming experience every single time you use it. It couldn’t be easier. | ENGINEERED TO PERFORM: Ceramic blades are waterproof. Rust, shock, slipping and the other common water problems that plague electric trimmers are a non-issue. Ceramics are much more resistant to heat than steel, so when the trimmer works its impressive feat, heat won’t affect your skin. Each blade comes pre-lubricated to run smoothly, reducing wear and tear while helping you maintain RPMs.