Blast Freezing makes a “30% faster freezing speed” than the models without FAN! Cold-air circulation occurs by a fan blowing from the m door ceiling so it can freeze stored food faster and easier! LG guarantees voltage fluctuation range 135V ~ 290V. No need to worry anymore about the internal test method, the elapsed time for temperature rises from -18℃ to -1℃ in the freezer while the power is turned off. A certain food could spoil and ice cream may melt the s temperature increases. buy your LG Refrigerator @ TD GOLD STORE.