WINSINN 30mm RGB fan which micro size and lightweight design, fast and stable cooling, colorful when it works, bringing you unparalleled experience. So many 3D Printer and DIY enthusiasts are full of praise for it, and it will also be your best choice. The working voltage is 5V, which perfectly compatible a various 3D printer extruder / hotend / nozzle or any DIY cooling and narrow place. High quality Hydraulic Bearings, 2-years Warranty. Balance price and performance, suitable for daily use, life: 35,000 Hours. Rated Voltage: DC 5V, Current: 0.13A, Power: 0.65W, Speed: 7500PRM, Air Pressure: 4.75mmHO, Airflow: 3.72CFM, Noise: 21dBA Widely Used: Suitable for ventilation of Small PC Case / Router / Raspberry pie / TV box / VR glasses and any small electronic equipment cooling ventilation. Packing List: 4 x 30mm RGB Fan 5v, Connector & Line length: XH2.54 11.8in(300mm), Size: 30mm x 30mm x 10mm