Note Please wear laser goggles during usage, avoid touching the laser directly to the eyes and skin. In order to avoid unexpected accidents happens, please stay with the machine while the laser module is working. Specifications Heatsink material: aluminum Recommend Focus Distance for Cutting: 30mm Recommend Focus Distance for Engraving: 30mm to 32.5mm Electric Output power: 20W Laser Output power: 5W-5.5W Wave length: 445nm blue laser Voltage: 12V Current: 2A Beam shape: Dot (focus can not adjustable) Lift time: >10,000 hours Working temperature: -40~75℃ Can engrave: MDF/ Balsa/ Paper / Wood/ Fabric/ Plastic/ Leather/ Plywood/ Foam Paper/ Anodized Aluminum Can not engrave: Metal/ Glass/ PCB/ Transparent Material Package List 1 x FoxAlien Blue Laser Module(Compatible with LE-4040 Laser Engraver/ 3018-SE/4040-XE CNC Router) 1 x Goggles Positioning Block 30mm Anti-Laser Shield