Product Details: 70mm Low Noise DC Brushless fan. Size: 70X70X15mm Power supply: 12V/24V Bearing Type: Sleeve Bearing/Ball Bearing Material: Plastic Blade/Plastic Frame Motor: Copper Motor Current: 0.08~0.3A Air Pressure: 2.6~4.1(H2O) Noise: 27~31DB(A) Weight: 45g Power: 1.92~5.52W Air Volume: 24.5-34.5CFM Speed: 3000~4000RPM Certification: CE,ISO9001;2008 After-sales Service Provided: No overseas service provided Fan Life: 30000 hrs Warranty: 12 months Application: Mechanical equipment, household appliances etc.