Feature:1. Upgraded version: Equipped with adjustable protective cover to protect your eyes, no need to wear extra laser glasses while working, safer to use than ordinary laser head.2. With adjustable focal length (5.5W or 10W or 20W, 20-70mm) or fixed focal length (30W, 12.6mm or 40W, 15mm or 40W, 40mm or 80W,40mm). Made of premium quality aluminum alloy casing with great durability.3. It can engrave paper, wood, fabric, plastic, leather, anodized aluminum, etc. Different laser modules for engraving or cutting different kinds of material and different thicknesses.4. Features high engraving speed, low power loss, good stability and superior performance, with fine heat dissipation to extend its service life.5. Compact and lightweight, easy to assemble, has over 30cm long line. Comes with screws, convenient and simple to be installed on the machine.6. Wide application, itu0027s designed for laser engraver, laser cutting machine, 3D printer, CNC mill and so on, suitable for DIY lover, CNC engineer, artist and moreSpecification:Professional laser module, easy to install, with lower loss, provides 450nm wavelength, for efficient, precise engraving and cutting of plastic, wood, leather, paper and so on, suitable for a wide range of engraving machines. This is the upgraded version with protective cover, safer to use than the old one.Features:Upgraded version: Equipped with adjustable protective cover to protect your eyes, no need to wear extra laser glasses while working, safer to use than ordinary laser head.With adjustable focal length (5.5W or 10W or 20W, 20-70mm) or fixed focal length (30W, 12.6mm or 40W, 15mm or 40W, 40mm or 80W,40mm). Made of premium quality aluminum alloy casing with great durability.It can engrave paper, wood, fabric, plastic, leather, anodized aluminum, etc. Different laser modules for engraving or cutting different kinds of material and different thicknesses.Features high engraving speed, low power loss, good stability and superior performance, with fine heat dissipation to extend its service life.Compact and lightweight, easy to assemble, has over 30cm long line. Comes with screws, convenient and simple to be installed on the machine.Wide application, itand 39 s designed for laser engraver, laser cutting machine, 3D printer, CNC mill and so on, suitable for DIY lover, CNC engineer, artist and moreNote:1. Avoid eye or skin exposure to direct or scattered laser light.2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.Specifications:Laser Power: 5.5W or 10W or 20W or 30W or 40W or 80W (Optional)- Adjustable Focal Length: 5.5W or 10W or 20W (20-70mm)- Fixed Focal Length: 30W (12.6mm) or 40W (40mm) or 80W (40mm)Color: SilverMaterial: Aluminum Alloy and Electronic ComponentsWave Length: 450nmLuminous Color: BlueOperating Voltage: 12VPWM or TTL Input: DC 3.3V-12V, 100Hz-50KHzInput Interface: XH2.54-3 Pin (and, -, PWM or TTL)Continuous Working: UnlimitedOperating Temperature: -20-70Laser Head Size: Approx.5.5W or 10W: 105 x 30 x 30mm or 4.13 x 1.18 x 1.18in20W: 120 x 40 x 40mm or 4.72 x 1.57 x 1.57in30W (12.6mm): 115 x 40 x 40mm or 4.53 x 1.57 x 1.57in40W (40mm): 100 x 40 x 40mm or 3.94 x 1.57 x 1.57in80W(40mm): 125 x 47 x 44mm or 4.92 x 1.85 x 1.73inPackage Size: Approx. 16 x 6 x 6cm or 6.30 x 2.36 x 2.36inPacking List:1 x Laser Module3 x Screw3 x Washer6 x Paper Card1 xMetal FixedFocus Rod1 x Laser Shield (Green)1 x User Manual (English)Package List:1 x Laser Module3 x Screw3 x Washer6 x Paper Card1 xMetal FixedFocus Rod1 x Laser Shield (Green)1 x User Manual (English) 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.