The Elite Pro High-Performance Haircutting Kit has our most powerful & durable motor, our finest precision self-sharpening blades and Secure-Fit guide combs with stainless steel attachment clips. Featuring Wahl’s best corded motor. The motor has 15 percent more power than Wahl’s PowerDrive premium motor for no-snag cutting. Wahl's Self-sharpening precision blades stay sharper longer and cuts hair 40 percent faster. If the blades are not oiled, it may be possible the blades will not move. However, even if not oiled, the clipper will usually have enough power to run. Note: This clipper is made to be only used in the USA. If used outside the USA, voltages are different and can affect performance and may damage the product. Save yourself time, money, and headaches between trips to the barber with the best in men’s grooming. Add the Wahl Elite Pro High-Performance Haircut Kit to your cart today! This clipper uses a very powerful motor that delivers nearly 10,000 cycles per minute to the blade. This results in a very strong audible hum, but is completely normal to its operation. Don’t settle for a weak clipper! Note: clipper has a power screw, it has been adjusted for peak efficiency before leaving the factory. However, if voltage in your home is low, you may need to re adjust it. To adjust power screw, use the plastic brush, a screwdriver or a thin coin to turn power screw in a clockwise direction until the arm strikes the coil, making a noise. Then, slowly turn power screw out (counterclockwise), just until noise stops. This is the maximum power setting. Also, it is important to oil your blades after each use. We test our clippers for cutting performance prior to packaging with a hygienic fiber. We do our best to clean the product to remove any testing particles, but it is possible a few may remain. They are not hair and can be simply wiped off.