For a long time fan of the three-piece "Micro Cooling Fan" occupy the mainstream market position. In recent years, wind speed and more stable, lower noise became popular five-leaf fan, fan status clover challenged, began brewing improvement. The blades are designed horn shape, becoming clover fan turned direction. Horns fan and ordinary "Micro Cooling Fan" the difference lies in the different blades volume sizes, different twist. Horns blade width is small, but it's big twist than the average fan, at the same speed, horn big fan of wind than ordinary fan. From the design point of view, the more power savings horns fan, to save energy. Meanwhile, horns than the average fan blades "Micro Cooling Fan" area is small, the vibration frequency is lower than a common operation fan, so noise is smaller than the ordinary fan.