The First Inverter-type Power Generator in this Class with High Quality Power Supply The inverter system and CVCF control ensure power supply comparable to any commercial power source. High Output Output at 50Hz has been increased by 20% to ensure equal output at 50Hz. LIGHTWEIGHT COMPACT DESIGN Our compact vertical water-cooled diesel engine and inverter-type power generator enable us to create a lightweight compact design with great portability. LOW NOISE LEVEL Our energy-saving system that constantly keeps engine rotation to the minimum necessary, coupled with noise reducing muffler and optimally matched acoustic absorbent materials, make this generator up to 10dB(A) quieter than previous models. ENERGY-SAVING OPERATION In addition our energy-saving system that optimizes engine rotation makes this model up to 40% more fuel efficient than previous models.