T-shaped blade of the trimmer has been specially processed, zero clearance, sharper and more durable. R-shaped obtuse edge design makes gentle contact with the body and does not irritate the skin. It is definitely an excellent design! Washable Blade Material This blade of this cordless clipper is made of stainless steel,simply rinse the blades under running water ,keep sanitary and avoid bacteria breeding. Note:Don't rinse hair clipper body in water,please dry the blade after cleaning Powerful Motor&Low Noise Trimmer is equipped with a powerful rotating motor to improve speed, power, and service life. The noise during haircuts is extremely low, below 60 decibels, so that your friends and family can stay away from the troubles of noise!