5 blade system: Incredible comfort - even if you shave every day. Thinner, finer blades effortlessly glide through hair with less tug and pull.* A MicroComb that helps guide stubble to the blades. 1 precision trimmer blade redesigned trimmer to help shape facial hair. A Fusion cartridges can be used with all Fusion handles. *First 4 blades vs. Fusion.