Features:This item is a necessary accessory for DIY engraving machine.It is a professional laser head with high speed and high stability.Bright blue-violet light, makes it easy for locating when engraving.Adjustable laser head is easy to adjust,and ensure engraving with good quality and high efficiency.100mW, 180mW, 500mW three output optical power are availableSpecification:Model: M12A 5VProduct category: laser module (laser head)Band range: visible lightWorking material: semiconductorLaser wavelength: 45nm(blue-violetlight)Spot type: dot (adjustable focusing)Output optical power: 100mW,180mW,500mW (optional)Drive mode: external ACC constant current driveHeat dissipation: natural heat dissipationWorking voltage: 5V DCShell material: anodic black on aluminum surfaceModule material: copperWeight: Approx.56g/2ozPackage list:1 * Laser Head1 * Screwdriver1set * ScrewsRequired reading for users:1. The power of the laser module is relatively large, which is only used in industrial occasions. It is forbidden to illuminate the eyes.2. Keep children away from the laser products.3. Do not open the module to avoid damage.