Other FeaturesConvenient, Easy Shave,Durable, Self-Sharpening Blades For An Effortless Shave,Heads Flex In 4 Directions To Easily Shave Every Curve,45 Minutes Of Cordless Shaving After An Eight-Hour Charge,Cordless Operation Only,Open By Pressing The Button, Then Use The Brush To Clean,Perfect For Trimming Your Sideburns And Mustache