Electric Pencil Sharpener, Small and Portable Pencil Sharpener For NO.2 Pencils and Colored Pencils, Auto Feature and Durable for Classroom, Home and Office, USB cable Included USB or Battery Powered: Our electronic pencil sharpener is powered by 2 AA batteries(Not include) or standard USB cord. To avoid the potential insecurity of plug-in for kids, the adapter is not included, but it is highly recommended that a 5V 1000mA adapter is used to get more strong power, which provides strong power sharpens for your pencil to a nice point only in 6-10 seconds. Kids-Friendly And Safe: The pencil sharpener stops working when the shaving tray is removed. The safe lock prevents kids from hurting their fingers when using alone. Space-Saving: The compact design and proper size make the Pencil Sharpener be a real space saver. Flexible, can take it easy without any burden and hassle. The pencil sharpener comes with a sharp built-in blade, which is powerful enough to give a fine point for No. 2 pencils or colored pencils. Do hold the pencil with your hand to sharp after it's powered. This is not designed for not for crayons and eyebrow pencil. 30 days unconditionally refund or free replacement if defective or any quality problems, life-time friendly customer service.