Check the listing for details. Focusable 450nm 1W Blue Laser Dot Module 1000mW Diodes W/ 12V Power Adapter. Condition: New. Listed at 46.60 USD. Focusable 450nm 1W Blue Laser Dot Module 1000mW Diodes W/ 12V Power Adapter Parameters: Wavelength:450nm Output Power:1000mw Power Supply:DC12V Working current:600mA Spot shape:Dot（rectangle） Output wave band:the visible light Material:Aerospace aluminum Optical portion:Focus Lens Lens Material:PVC Focus Lens Focusable:Yes Operating temperature:-40℃-75℃ Working medium:Semiconductor Working life:8000 hours.It comes with a powerful heat sink fan can work for long hours. Dimensions:33MMx55MM DC cable length 1.2 m (adjustable focus)tructural features:Aluminum shell+ laser diode+ K9 glass lenses+ Constant current driver board Features: Can engrave the following materials: wood, some plastic, paper, bamboo, horn, thin leather (wallet), rubber stamp, photosensitive stamp, printing paper (mainly used for engraving, less material to cut), sponge paper Other materials that are easy to burn.The following materials cannot be engraved: metal (whether thick), stone, ceramic, jewellery, reflective material, transparent glass, ivory, colorless transparent material, partially white plastic (usually very smooth plastic is difficult to engrave)