Bearing: Dual Ball Bearings, low noise and can work continuously 24 hours / day, long life: 50,000 Hours. Rated Voltage: DC 5V, Current: 0.3A, Power: 1.5W Speed: 3000PRM, Air Pressure: 2.4mmHO, Airflow: 33.6CFM, Noise: 31.5dBA Connector & Line length: XH2.54 11.8in(300mm), Size: 80mm x 80mm x 15mm Made by WINSINN. Warranty: 5-years for Dual Ball Bearings Fan.