engrave 2D or 3D picture in transparent materials Item Parameter Laser Medium Nd: YAG Laser Wavelength 532nm Laser Frequency 400Hz Normal Engraving Range 300X200mmX100mm Maximum Engraving Speed 20000-24000dots/min Continuous Working Time 12hrs Maximum Power of the Whole Machine 8 KW Number of Laser Heads 1 Weight of the Whole Machine 350 kg Dimension of the Main Machine 840mm?80mm?150mm Water Medium Deionized water or pure water Demand of Power 220V/single-phase/three-phase/50HZ/20A