??Bearing: Dual Ball Bearings, which high quality NMB, low noise and can work continuously 24 hours / day, long life: 50,000 Hours. Rated Voltage: DC 24V, Current: 0.09A, Power: 0.96W Speed: 6500PRM, Air Pressure: 8.34mmH?O, Airflow: 3.5CFM, Noise: 33.4dBA Connector & Line length: XH2.54 39.37in(1000mm), Size: 40mm x 40mm x 10mm Made by WINSINN. Warranty: 5-years for Dual Ball Bearings Fan.