The REMINGTON® R4000 Series Rotary Shaver features dependable Lithium Power, with up to 50 minutes of cordless runtime. The pivoting rotary head has more contour* and adjusts to any angle to help reduce irritation. With 2X More Tracks**, the blades stay in close contact with skin to help prevent irritation and deliver a fast shaving experience. You get two great styles from one shaver with the included stubble attachment. It snaps onto the shaver head and creates a stubble that will enhance your look. Plus, clean shaving is easy with the fully washable shaver and a special anti-microbial additive that helps inhibit the growth of bacteria. *More than previous Remington model **vs. Norelco Series 1000