Areocool dead silence 12cm blue led fan dual materialcolour fdb fan 121dba retail key features one of worldacirceurotrades most silence fan with breakthrough technology and innovation beautifully finished acirceurooeligdual colour and dual material fanacirceuro with four color combinations and leds the worldacirceurotrades first dual layered fan blades combination of plastic and rubber fan blades to absorb acirceurooeligwindacirceuro noise acirce