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 #2 pencils, colored pencils and charcoal pencils. It sharpens quickly and uniformly in 3-5s.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.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.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.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."