【360-Degree 4D Flexible Head & 27 Self-Sharpening Stainless Steel Blades】This electric shaver features a highly flexible 360-4D flexible head that moves 360 degrees. It closely conforms to the contours of the face, reducing missed spots. The 27 power cut blades efficiently capture and cut whiskers. Equipped with a self-sharpening system, it requires no oiling and maintains a consistently sharp cutting performance. 【Smart LED Display & Safety Lock Function】The smart LED display on this electric shaver includes features such as a cleaning reminder, battery level indicator, switch lock, and startup warnings, all designed for convenience and ease of use, even for beginners. The safety lock and warning functions prevent accidental operation during travel or by children, and notifications appear at startup, ensuring safety and peace of mind. Press and hold for 3 seconds to unlock/lock. 【Fully Waterproof & Wet/Dry Electric Shaver】This model is washable, allowing for complete rinsing and use in the shower (shave in the shower). It supports both wet & dry shaving and dry shaving. The head opens with a single touch for easy cleaning. The design requires no oiling, making maintenance convenient.