20W BT Laser Engraver Cutter 4240 CNC Laser Engraving Machine 420x400mm Large Working Area 5000mW Optical Power Fixed Focus Compressed Spot High Precision for Engraving and Cutting Wood Metal Glass Acrylic 4240 laser engraver offers a working area of 420×400mm(16.54×15.75 inches), making it an ideal engraving tool for hobbyists, home-makers, designers, artists and business starters. Features: 【Advanced Technology】Adopt the most advanced beam compression technology, 0.08mm square ultra fine focus laser, high precision, smoother, faster than ordinary laser. The new combined laser for precision engraving can directly engrave stainless steel, ceramic and glass (blackened glass surface). 【Wide Software Compatibility】Compatible with various sophisticated engraving software, such as LaserGRBL and LightBurn, which run on Windows XP, 7, 8, 10, also supports Mac systems. Engraving file format supports: JPG, DXF, SVG, G-Code, NC, BMP etc. The laser engraving machine is equipped with a power switch that is suitable for emergency shutdown and makes your work safer. BT with wireless connection supports for iOS and android app. 【New Eye conservation Design】the engraver with protective case can filter 97% of harmful rays. The visible laser conservation cover protects your eyes perfectly and lets you see where the laser focus is located. 【Strong & Easy to Install】Laser engraving machine with all-metal structure, strong and , makes the laser movement more stable and has an accuracy of up to 0.01 mm. Installation is easy and can be completed in 10-20 minutes. The engraving speed can reach 10,000 mm/min and the service life can reach 25,000 hours. Both the X-axis and Y-axis have precise scale lines, so you can quickly measure material. 【Wide Application】Our laser engraving machine can engrave almost any object, including wood, acrylic, glass, stainless steel, ceramic, stone, food, bamboo, plastic, leather, cardboard and round objects (additional roller required), it can cut wood up to 10 mm and black acrylic up to 5 mm, 420 x 400 mm large engraving area can meet your different engraving requirements.  Specifications: Laser Electric Power: 20W / 40W (optional) Plug: EU / US / UK (optional) Color: Black Material: Aluminum Support BT Function: Yes Working Area: 420 x 400mm Power Supply: 24V, 2A Stepping Motor: 42 x 48 mm Precision: 0.01mm Optical Power: 5000mW / 10000mW Laser Wavelength: 450±5nm Light Spot: 0.08 x 0.08mm (5000mW) / 0.12 x 0.12mm (10000mW) Interface: 3 pin (12V, GND, PWM) System: Windows XP / 7 / 8 / 10, Mac OS Application Material: White paper, wood, cardboard, plastic, leather, PCB board, alumina, non-reflective coated, non-painted metal, stainless steel, ceramic, acrylic, etc. Item Size: 600 * 540 * 285mm / 23.62 * 21.26 * 11.22in Package Weight: 4260g / 9.39lb Package Size: 59 * 24 * 14cm / 23.23 * 9.45 * 5.51in Package List: 1 x X-axis Gantry 2 x 445mm X-axis (One with scale, one without scale) 2 x 560mm Y-axis (One with scale, one without scale) 4 x Footstand 1 x Laser Module 1 x Power Adapter 1 x Control Board 1 x USB Cable 2 x 670mm Synchronous Belt 2 x M5 * 8 Screw 4 x M5 * 10 Screw 4 x M5 * 20 Screw 4 x M3 * 8 Screw 4 x M5 * 16 Screw 4 x M3 T Nut 2 x M5 T Nut 4 x M2.5 * 10 Screw 4 x M3 * 10 Screw 3 x Allen Wrench (4mm, 2.5mm, 2mm) 6 x Cable Tie 1 x Fixed-focus Plate 1 x U Disk 4 x Linden Plank 2 x Stainless Steel Sheet 1 x Open Spanner 1 x M2.5 Screwdriver 1 x User Manual (English)