Product details: Product name: DC BRUSHLESS FAN Size: 40x40x20mm Power supply: 5V/12V/24V Bearing Type: Sleeve Bearing/Ball Bearing Material: Plastic Blade/Plastic Frame Motor: Copper Motor Current: 0.05~0.3A Air Pressure: 3.5~7.5(H2O) Noise: 27~33DB(A) Weight: 25g Power:0.84~2.4W Air Volume: 5.5CFM-8.8CFM Speed: 5000RPM-8000RPM Certification: CE,ISO9001;2008 After-sales Service Provided: No overseas service provided Fan Life: 30000 hrs Warranty: 12 months