... , Microscope etc Xenon Cold Light SourceSwitch -on/off power supply, steady voltage output, the lower failure rate. ... *320*230mmNet Weight: 3.9kgLong bulb lifeLow power, good luminous efficiencyLow power, low heatXD-300-50W(III)Mini XenonLight ... Weight: 1.25kgConvenient to carryLong bulb lifeLow power, good luminous efficiencyLow power, low heatSmall and beautiful, light weightXD- ...