WINSINN 30mm fan 5V which micro size and lightweight design, suitable for 3D printer / Raspberry pi or any DIY cooling and narrow place. High quality Dual Ball Bearings, 5-years Warranty. balance between high air volume and low noise, Suitable for 24 hours / day long-term work, long life: 50,000 Hours. Rated Voltage: DC 5V, Current: 0.126A, Power: 0.63W, Speed: 9000PRM, Air Pressure: 6.86mmHO, Airflow: 4.35CFM, Noise: 25dBA Widely Used: Suitable for ventilation of Small PC Case / Router / Raspberry pi / TV box / VR glasses and any small electronic equipment cooling ventilation. Packing List: 2 x 30mm Fan 5v - Dual Ball Bearing, Connector & Line length: XH2.54 11.8in(300mm), Size: 30mm x 30mm x 10mm