Item Name: 12V 6W 12W Laser Engraver Module Feature: DC 12V Blue Laser 6/12W Optical Power LD FAC Beam Compression Wavelength: 450nm Fixed Focus: 23mm/30mm Spot size: 0.06mm Feature Measurement System: Metric PCs in Item: See Options. (Laser module comes with Cable) Manufacturer: Dimifun, Made in China