Silent 5 PC low speed optimised quiet fan by Gelid Solutions. Speed: 4000 RPM Dimensions: 50mm x 50 x 15mm Air flow: 12.9 / 21.94 CFM / CMH Current: 0.15 Amps. Voltage: 12V DC Noise level: 23 dBA Cable length: 460mm A PC fan designed for quiet operation using optimised fan blades with a high airflow and static pressure. These use long life (50,000 hr MTTF) Hydro Dynamic bearings. Status: New retail boxed stock RoHS compliant: YES