DESC: These blades feature a diamond-like carbon coating, plus a titanium coating for twice the durability of standard stainless steel blades. This gives you smooth cutting with a long-lasting sharp edge. The height adjustment control dial allows you to adjust cutting lengths quickly and easily. Choose 1/2, 3/8, 1/4 or 3/16-inch cutting length comb attachments for perfect clipping and trimming of your hair. The trimmer can be used in corded mode or charge up the battery for eight hours to use for 55 minutes in cordless mode. Cutting Length - 0.03-0.79 inch with 5 steps Cutting Ability - 45,000 per second Height Adjustment Control Dial Dimensions - Height 6.90 x Width 1.80 x Depth 1.40 inch Weight - 0.51 pounds