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