Features: 1.Intelligent, digital and powerful electricity saving device. 2.Stabilize the voltage and it is protecting devices. 3.Balance the current source. 4.Smart, sleek design with LED lights to indicate operation. 5.Prolong the life of electrical devices. Description: 1.Saving electricity means saving money saving money means earing money. 2.The electricity saving device saves and reduces energy by stabilizing the voltage which in turn results in reductions in peak power demand and less waste of low efficient power. The low efficient power is consequently stored and recycled by the unit. Specification: Color: Silver Material: plastic Plug Standard: US Plug, EU Plug, UK Plug Rated voltage: 90V-250V Rated frequency: 50Hz-60Hz Useful Load: 30000W Size:12*7cm Package size: 12*7*8.5cm Package Included: 1 x Electricity Saving Box 1 x Manual Note: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. The color of the actual items may slightly vary from the above images due to different computer screen, thanks for your understanding.