The Instinct Metal Edition Professional Cordless Hair Trimmer is engineered with cutting-edge technology. It boasts a patented IN2 Vector motor with intuitive torque control, idles at 8,500, and speeds up to 11,500 RPM to adjust for resistance. It detects thick or bulky resistance and adjusts torque to blast through the hair. The fixed Black Diamond X-Pro Wide blade and "The One" deep cutter ensure precise, smooth cuts and sharp lines. Our highest quality Black Diamond Carbon blade is rust and corrosion impermeable, self-sharpening and stays cooler and sharper longer which is also self-sharpening and anti-corrosive. This Lithium-ion battery delivers up to 2 hours of cordless run-time, and recharges in just 2 hours. Duration varies with torque control use. The trimmer has a dual-ended zero-gap blade setter for perfect alignment, offering both zero-gap settings and a factory-standard blade distance of 0.3mm. Crafted with a super compact rear metal housing, allowing it to operate quietly and smoothly, dampening noise and vibrations.