Very quiet operation Low-noise operation due to high-quality rifle bearing. The parallel arrangement of recesses on the outer side of the bearing shaft ensure uniform circulation of the high-quality oil & make the fan very quiet. Mechanical noise is minimized by antivibration fasteners & the rubberized fan frame. The high-quality IC motor controller reduces electrical noise sources. Long service life Reliable cooling for up to 200, 000 hours thanks to the high-quality rifle bearing. High air flow The flow-optimized surface structure of the fan blades produce more air flow in combination with smooth running. Simple assembly Screwless installation makes handling simple. Service 3 year manufacturer guarantee. Specifications: Fan speed @ 12V (rpm)2000 Air flow @ 12V (cfm, m 3/h)26 / 44.1 Air pressure @ 12V (mm H2O)2.25 Noise level @ 12V (d B (A))16.6 Lifespan (h / 25°C)200.000 Rated voltage DC (V)12 Starting voltage DC (V)5 Operating voltage DC (V)5 ~ 12 Input current, real (A)0.06 Input current, safety (A)0.15 Input power (W)1.80