Bearing: Sleeve Bearings, Cheap, Use time no more than 12 hours / day, life: 30,000 Hours. Rated Voltage: DC 12V, Current: 0.19A, Power: 2.28W Speed: 3900PRM, Air Pressure: 2.88mmHO, Airflow: 18.46CFM, Noise: 23.9dBA Connector & Line length: XH2.54 11.8in(300mm), Size: 60mm x 60mm x 10mm Made by WINSINN. Warranty: 1-years for Sleeve Bearings Fan.