1[ 3 Levels ] Can cut 300 times+ after 1.5 hours of charging, recognize different pen needs, 3 levels, can be pointed or flat, art students will use different brush strokes to meet your needs 2[ 8 Seconds] One release, one take, two steps to get it, 8 seconds fast cutting, immediately available. Charging 1.5 hours can cut 300 times+ 3[ 3500+ Times] Thread hob, enclosed knife box, double protection, safe and not hurting hands, 3500+ times of pen sharpening speed is not reduced 4[ Automatic Design ] Suitable for cutting pencils and colored lead with a diameter of 68mm, automatic lead discharging hole design, easy discharge without disassembling the broken lead 5[ Easy Clean ] Non slip pad at the bottom, the pen will not go round when sharpening, ABS material is wear resistant and durable, with a large diameter upward waste trough, large capacity, easy to clean, and no dirty hands Item Type: Sharpener Material: ABS, Zinc Alloy ,Silicone Product Size: Approx. 16.8 x 8.5 x 8.5cm / 6.6 x 3.3 x 3.3in Diameter That Can Be Cut: Approx. 6-8mm / 0.2-0.3in (Both Pencils and Colored Pencils Can Be Cut, Rounded Corners, Triangles, and Hexagonal Penholders Can Be Cut) Battery Type: Lithium Battery ( with Built In Battery) Battery Model: 18650 Battery Capacity: 2000mAh Broken Core or Foreign Matter Card Core Treatment: 1. when the Short Tip of the Pen is Stuck in the Tool Holder During the Process of Sharpening, You Only Need to Reinsert the Pencil and Press It Down with a Force of About 2kg, and the Pencil Can Remove the Broken Lead. 2. After Using Chalk, Crayons, or Carbon Pens Incorrectly, if the Tool Holder is Blocked, Follow the Steps Below to Eliminate: A. Rotate the Box Cover Counterclockwise and Lift It Up to Take out the Knife Holder Assembly. B. Use Toothpicks and Other Tools to Pick out Foreign Objects (not Sharp and Hard Tools to Avoid Damage to the Hob Blade) C. if You Reinstall the Removed Tool Holder Assembly, First Align It with the Corresponding Position, and then Tighten It Clockwise. when You Hear the Click, It Will Be Assembled in Place, and the Pen Can Be Sharpened Normally Clean the Waste Bucket: 1. for Your Safety, Please Unplug the Power Plug when Cleaning Up the Waste 2. Grasp the Upper Apex and Rotate It Counterclockwise and Lift It Up to Take out the Knife Holder Assembly 3. Pour out the Waste Directly, and then Clean It Up 4. when the Pen Scraps in the Scrap Bucket Get 1/3 of the Volume, Please Discard the Rubbish Before Use 1 x Sharpener 1 x USB Cable 1 x Brush 1. with built in battery2.Please allow 0 to 2 cm error due to manual measurement. Thanks for your understanding.