Product Description The VGR V-927 Professional Hair Trimmer uses high-quality stainless steel blades for a more precise and smooth cut. The special blade shape prevents skin from injury, suitable for all hair types. Using the four adjustable cutting guide combs provided, you can adjust the trimming length up to 1mm to 7mm. Precision length adjustment combs: 1-3-5-7mm for styling and lengths. LITHIUM BATTERY: Powerful 500mAh lithium-ion battery allows for 60 minutes of cordless clipping with a charging time of just 1.5 hours.