Powerful Compressed Laser Spot: The ATOMSTACK PRO+ 40W laser engraving machine adopts spot compression technology, which makes the light source more concentrated. The normal laser spot is 0.3mm x 0.5mm and the compressed point with us is 0.16mm x 0.19mm. Compared to conventional engraving machines, The high-density laser can easily cut 6mm thick wood and black acrylic; it can directly engrave smooth stainless steel metal and ceramics. New Eye Protection Design: Adopts newly laser protective cover perfectly protect your eyes, a filter UV light for 98%. You and the people around can watch laser engraving without wearing goggles. Reduce the cost of your goggles and the inconvenience of wearing goggles. Upgraded High-Performance Fixed-Focus Laser: No need to adjust the focus before engraving; the new laser focal spot is 50% smaller than other ordinary lasers, new laser combines precision engraving and high energy cutting at the same time. The laser power of the fixed-focus laser is more stable than the zoom laser. The new knob design allows you to adjust the distance without the aid of tools. It is more convenient and quick. Wide Compatibility: The Atomstack PRO+ 40W laser machine can be compatible with various mature engraving software, such as LaserGRBL, LightBurn(paid), support Win XP / Win 7 / Win 8 / XP / Win 10, and also support MAC system (LightBurn), engraving file format supports NC, BMP, JPG, PNG, DXF, etc. Newly Upgraded Package Content: ATOMSTACK PRO+ 40W Laser Engraver adds Power Switch Cable to the previous package. You can turn on/off the device more conveniently without having to re-plug the power plug. A stainless steel Backing Plate is also presented to protect your table and workbench.