1. Self-Sharpening Precision Blades are made to ensure that they do not burn skin from overheating. Precision ground blades cut through all hair types and stay sharp longer. It's durable sharp. 2. Washable Blades - Simply rinse the blades under running water for quick, hygienic cleaning. NOTE: Please do not immerse the whole clipper in running water 3. R Shaped Sharp Angle Design - R-shaped acute angle design will not stab the skin due to angle problems during sharp use and it is wear-resistant. 4. USB Quick Charge - You can use it during the charging process, or you can use it separately after fully charging.Cordless convenience allows use anywhere at any time 5.Powerful motor made of premium copper core and carbon stainless steel housing which generate continuous power output.