The TWOTREES® TS2-20W Laser Engraver Professional Laser Engraving Machine is an impressive engraving machine with a variety of features that make it stand out from the crowd. Its large engraving area of 410mm*410mm allows it to quickly and easily engrave images, text and other materials with great accuracy. The 20W laser power and auto focus with air assist makes precision engraving easier than ever before. The best feature of this engraver is the APP connection that allows you to monitor and control the engraving process from your smartphone. This makes it easier than ever to create beautiful and intricate engravings. Overall, the TWOTREES® TS2-20W Laser Engraver Professional Laser Engraving Machine is a great choice for anyone looking for a powerful, high-quality engraver. The easy to use app connection and the large engraving area make this engraver perfect for both professional and hobbyist projects. With its great features, this engraver is sure to become a favorite of engraving enthusiasts.