Remington F3 MENS DUAL FOIL FLEX SHAVER. The F3’s Constant Contour Flexing Foils contour to your face for comfort. Its Quietdrive Advanced Motor is engineered 20% quieter for a more comfortable shave. The ComfortCut blades are sharp and close cutting, plus the pop up trimmer provides a precise shave. The razor boasts a 30 minute cordless runtime and charging indicator. NiMH battery. Blue&Black.