Panasonic technology allows your shaver to be fully immersible in water for a great shave in or out of the shower. A total of four cutting blades ensure maximum coverage comfort and superior cutting while shaving time is reduced. Linear motor delivers side-to-side motion while a second motor vibrated the shaver head up down for a smooth close shave. 30-degree inner blades featuring nanotechnology cut the hair at its base for an even closer shave. The pop-up trimmer is great for grooming your mustache or sideburns. Just pop up when ready to use and tuck away when you're finished. Rinse the shaver under running water while sonic vibrations rinse away debris.