The Philips HQ6690 has a Super Lift and Cut system that lifts hair above skin before being cut, and a pop-up trimmer for sideburns and moustaches, the heads of the shaver float individually for a closer shave and are corrosion free, while an ultra-fast 1 hour charge gives a generous 30 minute of shaving time. Features: The dual blade system in Philips HQ6990 lifts hairs to cut comfortably below skin level, Reflex Action system in Philips HQ6990 automatically adjusts to every curve of your face and neck, Full width, pop-up trimmer in Philips HQ6990 shaver is perfect for grooming sideburns and mustache, The ergonomically designed grip of Philips HQ6990 enables easy handling for a comfortable shave, 1 Hour of charging for up to 30 mins of shaving , Reflex Action System, Reflex Action System of HQ6900 shaver adjusts to every curve of your face and neck. Replex Action System follows the curves and contours of the face, so there's optimal soothing and minimal friction. It adjusts to every curve of your face and neck for flexible, smoother shaving. Super Lift & Cut technology, Philips HQ6900 Shaver has a combination of 2 double action cut system which helps you to achieve close and perfect shave in a single stroke, Its dual blade system provides double action one move. First blade lifts the hair from skin and the second blade cuts for a comfortable close shave. Pop-up trimmer, Full width, pop-up trimmer is perfect for grooming sideburns and moustache. Easy grip for optimal handling.