If you use the Remington Ultimate Series R7 XR1550, you will be assured of a smooth result thanks to the flexible shaver head. The shaving head moves in 4 directions and effortlessly follows the contours of your face. And you shave without risk of skin irritation, because this shaver has the LiftLogic technology. This means that the first shaving foil lifts the hair up, and the second shaving foil shaves the hairs close to the skin. Shaving is done dry, with foam or in the shower. After 50 minutes of use the battery is empty and you place the shaver in the charger, the 3 phase LED charging indicator shows when the battery is fully charged. Charging takes 240 minutes.