Description: 100% new and high quality Feature: Made of high-quality materials, , firm and stable to use. Three gears adjustable, you can adjust the wind speed according to your needs. Used for chassis cooling, extend the life time of the chassis. Comes with some screws and accessories, it is easy and convenient to install the fan. Fun Running: When the fan is turned on, it will stop after running for 3 seconds(if the temperature is higher than 40, it will stop). 40-50, the fan runs at low speed. 45-50, the fan runs at medium speed. Above 50, the fun runs at high speed. Specifications: Item Type: Cooling Fan Size: module: 47x23mm/1.8x0.9in, fan: 50x50mm/1.9x1.9in Input Voltage: DC6-70V Max Power: app.2W(fan runs at high speed) Min Power: app.0.2W(fan stops) Rotating speed: 5000 minus or plus 10%rpm Noise: 20DB Color as shown Material: PC+metal+plastic Package Contents: 1 x Fan 1 x Control board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.