Used in humidifier aromatherapy and other small appliances series; small heat radiating communication equipment; military equipment; intelligent industrial control equipment plate cooling heat, high precision medical equipment cooling; pc cpu server cooling dissipation etc.

Specification
NAME: 4 x DC Brushless Oil Bearing Cooling Fan
Rated Voltage : DC5V
Consuming Current : 0.27A
Consuming Power: About 1.3W
Speed: 5000±5% PRM
Iife Expectance: 28000 hours at 40 degree
Acoustic Noise: 22DBA
Air Flow: 3CFM

Acoustical Noise Testing Condition: Fan is hanged in anechoic chamber, noise is measured at rated voltage in anechoic chamber with microphone at a distance of 1 meter formthe air intake.
USB plug can power the fan through USB ports found behind popular AV electronics and game consoles.
❃❃ Fan size: 50x50x10mm(L*W*H); Rated Voltage: 5V DC, Current: 0.27A.
❃❃ Airflow: 3CFM, Speed: 5000±5% RPM, Noise: 22 DBA.
❃❃ Bearing Type: Oil Bearing.The 50mm 5V usb blower fan can be used for 3D Printers, humidifier, humidor, aromatherapy, small squirrel cage and other small appliances series repair replacement
❃❃ Lead Wire: USB; Length: 1m / 39.37 in.
❃❃ Package Included: 4 * DC brushless fans.(Notice: 'DO NOT GET WET' or 'Put it in a humid environment'; Or it will stop working. Any questions, you can contact us and we will help you.)