Built With Safety in Mind: The Smart Stop technology stops sharpening when finished and will not work without lid, even stop working when overheat. This is for the protection of students and adults alike.

Conveniently Electronic: Allows for fast sharpening and can be used with USB Cable(included) or AC adapter (include) or 4 AA Batteries,

Very Portable: Lightweight and minimal cords make it easy to take wherever your busy life takes you go. Note: this unit is only for pencils with 6-8 mm diameter.

Build Strong : With blades made of helical steel, the sharpener will continue working when you need it, even after 3000 uses.

Protection For You: OPOLAR includes a one year warranty against defects in this unit. Your satisfaction is our goal. Note: Do not sharpen wax or chalk as they will stick to blade and jam it.