Extremly quiet operation. 4,000 strokes per minute. Runs so cool, fans and air vents that can become clogged with hair are not needed. AG Detachable blades for ease of changing and cleaning. Shatter-proof housing. Locking off. Maintenance free- no oiling or greasing of internal parts is needed. All Model AG blade sets are made of high quality carbon steel, specially hardened for long cutting life. 16' heavy-duty cord. Replacement blades are available-call for more information.