Features: Automatic Sharpening: Electric pencil sharpener with heavy-duty spiral blade, fast sharpening, saving time and effort. Suitable for sharpening pencils, color pencils, carbon pencils, etc. Durable and Reliable: High quality ABS shell and alloy spiral blade, sturdy and durable. Overheat protection function, auto-stop working, which can slow down the aging of the machine and improve the service life. Adjustable Sharpness: With a control knob to adjust the thickness of the nib, sharp and blunt, the degree can be adjusted according to your writing needs. Long Endurance: Built-in 2000mAh battery, once charge can use more than 300 times. Support the power supply of computer, laptop, power bank, etc. Great Gift: Practical pencil sharpener, support sharpen the pencil with a length of 7cm or more. It is ideal for children, students, teachers, artists, etc.