Characteristic: A. German laser diode pump 2000Hz,spanlife is 15000hours and almost maintenance free B. 2-3 mins for a 3D portrait inside the 50X50X80mm crystal C. Large engraving range: 300x200x80mm D. Lowest power consumption, low lifetime cost, low cost of ownership E. Used friendly software under Windows Xp require only short training F. Simple service through exchange of only one functional unit in a short Time G. Most precise marking whith extraordinary beam quality Item Parameter Laser Medium Diode pump Laser Wavelength 532nm Laser Frequency 2000Hz Maximum Engraving Range 300x200x80(mm) Maximum Engraving Speed 2000points/s Continuous Working Time 12hrs Maximum Power of the Whole Machine 1.6 KW Number of Laser Heads 1 Weight of the Whole Machine 120 kgs Cooler unit 36kgs Dimension of the Whole Machine 850mm¡Ã730mm¡Ã650mm Water Medium Deionized water or pure water Cooling Medium R134A