Features: 2 Eraser Sizes: Equipped with 2 sizes of eraser refills, φ2.3mm and φ5mm erasers, meeting the needs of detail and local multiple highlights. Strong Erasing Capability: Working in high speed, strong erasing capacity allow you to erase the targeted spot effectively and precisely. Rechargeable Electric Eraser: Built-in 600mAh lithium battery, this electric eraser can be used for 600 times after charging. One-button to control, easy to use. Rechargeable, environmentally friendly and durable. Comfortable Grip & Protective Cover: Made of high quality ABS material. Ergonomic design, smooth surface, very comfortable to hold. Transparent protective cover, when not in use, it can be used to protect the tip of the pen, it can also be placed to the tail end to protect the charging interface. Wide Application: The electric eraser is easy to control. Ideal tool or gift for students, designers, artists and professionals. The package includes 16 refillable erasers( 8 * big refills, 8 * small refills), easy to dismantle and replace. Specifications: Model: MS8305 Color: White/Blue(optional) Material: ABS Battery Type: Built-in 600mAh Lithium Battery, 3.7V Item Size: 14.5 * 3.3 * 2.5cm / 5.7 * 1.3 * 1.0in Package Size: 17.5 * 9.7 * 2.9cm / 6.9 * 3.8 * 1.1in Package Weight: 106g / 3.7oz Packing List: 1 * Electric Eraser 2 * Plastic Clip Holder 8 * Big Eraser Refills(φ5mm) 8 * Small Eraser Refills (φ2.3mm) 1 * USB Charging Cable