Model: HZW-75Y Maximum Power 75W Laser wavelength 1.064NM Maximum energy of single pulse: 60J Working distance of Laser welding: MM 100-130 Welding depth: 0.1-3.3MM Pulse width: 0.5-20MS Spot size: 0.2-2MM Total power: 5KW Power voltage: 220V, 50HZ Voltage adjustment range: 100-400 Maximum pulse current: 540A Pressure protection: 0.025MPA Cooling water temperature: 35 degrees Water temperature protection: 45 degrees Cooling water protection: 10L/ MIN Observation system: Microscope Magnification of observation system: 10X