Akasa 120mm APACHE Black | Silent Case Fan | HDB Long Lifespan Bearing | PWM Auto Speed Control | IP-54 Dust & Water Proof | For PCs, Heatsink, CPU Cooling and Ventilation | AK-FN058

[ Aerodynamic S-FLOW Blade ] - Optimised S curved fan blades design achieves powerful airflow & air pressure for impressive cooling capabilities. [ Ultra-quiet Acoustics ] - Tool-free & Anti-vibration rubber fan mounts reduce fan vibration noise. Perfect choice for quiet environments such as home, office, gaming and multimedia systems. [ IP54 Dust & Water Proof ] - Certified IP-54 military standard, dust and moisture resistant technologies ensure the fan will last even in harsh, outdoor conditions. [ Intelligent PWM ] - APACHE fan with PWM auto speed control ensures low noise operation of only 6.9 -16.05 dB(A) during regular PC use or under high system load. [ Extended Lifespan ] - Hydro-Dynamic Bearing technology maintains constant bearing lubrication, prolonging life expectancy up to 50,000 hours.