German Engineering - German Design - German Quality - German Performance Optimized fan blades for the highest performance on radiators and heat sinks Small tip clearance and fan frame with funnel-shaped air outlets for extremely high air pressure Very silent operation even at maximum 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 PWM controlled fan speed through the motherboard Super-long lifespan of 300,000h Elegant look with high-grade fan sticker in an all-black design 5-year manufacturer warranty