Philips OneBlade is designed to trim, edge, and shave any length of hair. The unique OneBlade shaving technology integrates a fast moving cutter (200x per second) with a dual protection system - giving you an efficient comfortable shave on longer hairs. OneBlade does not shave too close - so your skin stays comfortable. OneBlade follows the contours of your face allowing you to effectively and comfortably trim and shave all areas of your face. The OneBlade replacement blades are 100% water resistant, so they are easy to clean - just rinse them under the tap. Shave with or without foam - whichever you prefer. The blades are designed for lasting performance. For optimal performance, you will only need to replace the blade every 4 months*. Replacement is easy and hassle-free. *Based on 2 full shaves per week. Actual results may vary.