1. Introduction: standard USB interface、 plug and play、 simple and convenient operation、 plus protection switch; do not find that the battery、 as long as a computer or power adapter USB adapter、 you can take power. 2. Scope: USB pencil sharpener is the best choice for today's digital era gift! Business owners、 school、 home、 etc.3、 for the system: Win98 / Me / 2000 / XP equipped with USB1.1 or 2.0 interface desktop or laptop can be used4、 Features: USB New! And convenient、 and stylish、 and environmentally friendly USB pencil sharpener born it! Easily pencil、 written a nice、 neat、 safe! When working with LED colorful light show off Oh! At your convenience but also bring you a happy mood! 5、 Weight: 230gName: USB pencil sharpener Package: opp bags Product Specifications: 81.5 * 71 * 78mm