Featuring an advanced touch screen display and the GyroFlex 3D system for an incredibly close and comfortable shave, the Philips Norelco 1290X/40 SensoTouch 3D Electric Razor makes shaving a pleasure, not a chore. Its technology provides superior shaving performance without sacrificing skin comfort or convenience. Powered by a lithium-ion battery for portable cordless operation, the SensoTouch 3D lets you shave wherever, however, and whenever you want. The SensoTouch 3D gives you the ultimate shaving experience. Its GyroFlex 3D system has three dynamic parts that move independently, flexing outward, pivoting around, and tilting inward, following the natural contours of your face. Also, the UltraTrack shaving heads catch every hair in just a few strokes with three specialized shaving tracks: slots for the long hairs, channels for the longer hairs, and holes for the shortest stubble.