VERSATILE SHARPENING: Great for work, school, or home, this portable pencil sharpener efficiently sharpens pencils with a 6-8mm diameter AUTOMATIC OPERATION: Simply insert a pencil to start sharpening automatically. It features an automatic shut-off function when sharpening is complete or if the cover is opened DUAL POWER OPTIONS: Enjoy the flexibility of powering this battery pencil sharpener with 4 AA batteries (not included) or a USB cable. Its portable design makes it easy to use anywhere you go HELICAL BLADE PRECISION: Equipped with a durable helical blade, this electric pencil sharpener delivers precise and consistent sharpening results, so your pencils are ready for use. LARGE SHAVINGS CANISTER: The spacious shavings canister reduces the frequency of emptying, providing extended use and convenience without constant interruptions