Heavy Duty Pencil Sharpener: The large pencil sharpener features a powerful motor and durable spiral blade that can be sharpened over 5000 times. Fits a variety of 6-12mm 2 pencils, colored pencils and charcoal pencils. Fast, even sharpening in 3-5 seconds. Auto-Stop: Works automatically when inserting the pencil into the pencil socket. Automatically stops working when finished or when the lid is opened to protect children's safety. It prevents oversharpening. Three Adjustable Pencil Tips: This electric pencil sharpener has 3 sharpness settings: blunt, medium, and sharp. It is also very quiet and fast when sharpening, and can meet different usage needs. Perfect for artists, students, teachers, professors, engineers or architects, making drawing, writing and coloring easier. Rechargeable Pencil Sharpener: The portable pencil sharpener can be used 300 times in 1 hour of charge. It can be charged via USB or connected to an AC adapter to keep the battery charged for a long time. Large Capacity Design: The large capacity shaving box can hold large amounts of shaving waste, reducing cleaning time. It is easy to open the lid and pour out the pencil shavings directly. The non-slip feet on the bottom make it more stable for sharpening.