No Compromise Silence and Performance Silent Wings 4 120mm combines all features of a virtually inaudible with an extremely performant fan. A 6-pol-motor and anti-vibration mountings combined with fan blades optimized for maximum airflow make Silent Wings 4 120mm the perfect choice for the most demanding applications in high-end systems. Features Optimized fan blades for the highest performance. Small tip clearance and fan frame with funnel-shaped air outlets for extremely high air pressure. Virtually inaudible operation at regular speed. 6-pole fan motor for less vibration and power consumption. Fluid-dynamic bearing enables very smooth operation. Anti-vibration mounting with push pins for installation as a case fan. An alternative screwed installation can replace the default mounting option. Super-long lifespan of 300,000h. Elegant look with high-grade fan sticker in an all-black design. 5-year manufacturer warranty.