Portable Precision Electric Engraving Pen Engraver DIY Carve Graver Machine Tools Battery Powered with Strong Diamond Tip <b>Usage:</b> 1. Insert the batteries into the battery compartment and connect them to the engraving pen. 2. Press the red button on the engraving pen, and you're ready to go. <b>Specifications:</b> Color: Black Material: Plastic + Diamond Tip Battery Operated: Powered by 4 * AA batteries (not included) Application: Metal/Wood/Glass/Stone/Ceramic/Hard Material Surface Item Size: 16.0 * 2.3 cm / 6.3 * 0.9 inches Item Weight: 41 g / 1.4 oz Package Size: 11.7 * 19.8 * 2.8 cm / 4.6 * 7.8 * 1.1 inches Package weight: 126 g / 4.4 oz <b>Notes:</b> Please allow 1-3 mm error due to manual measurement. Do not touch the diamond tip when the engraving pen is working. <b>Package list:</b> 1 * Engraving Pen 1 * Battery Case Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.