Quiet action: The cordless construction minimizes noise during use, allowing undisturbed crafting in shared spaces Adjustable Speed Control: Features 3 selectable speed levels ranging from eight thousand to 21000 rotations per moment to accommodate various materials security: Rechargeable via standard USB port with built in circuit security that automatically shuts off power when excessive pressure is detected Cordless Convenience: Delivers up to 2 hours of continuous use with rapid charging capability, eliminating cable restrictions while processing metals, synthetic materials, or stone with the included 309 attachments Creative Companion: Explore your artistic potential with this compact handheld engraving tool, perfect for working on surfaces including glass, metal, wood, Manufacturer: Hsyzygian