Heavy Duty Pencil Sharpener: With powerful motor and durable helical blade, the large pencil sharpener can sharpen over 5000 times. Fit all kinds of 6-12mm<br> 2 pencils, colored pencils and charcoal pencils. It sharpens quickly and uniformly in 3-5s.<br> Auto Stop: Automatically work when plugging the pencil into the pencil socket. Auto-stop working if finished or the lid is opened for protecting the safety of the child. It could prevent excessive sharpening.<br> Three Adjustable Pencil Nibs: This electric sharpener has 3 sharpness settings: blunt, medium, sharp. It is also very quiet when sharpening and fast, which can meet different usage requirements. Great for artists, students, teachers, professors, engineers or architects to make drawing, writing, and coloring easier.<br> Rechargeable Pencil Sharpener: The portable pencil sharpener can be used 300 times on 1 hour's charge. It is available to be recharged by USB, or connect AC adaptor to recharge the battery, holds the charge for a long time.<br> Large Capacity Design: The large capacity shavings box can hold a lot of shavings waste and reduce cleaning times. It is easy to open the cover and dump directly the pencil shavings. Non-skid foot pads at the bottom make it more stable to sharpen.