50mm Fan 5V USB Brushless DC Cooling Fan, 4 Pack Speed 4200 RPM for Small Appliances Series Replacement (4 PCS 5010 USB)

Fan size: 50x50x10mm(L*W*H); Rated Voltage: 5V DC, Current: 0.21A. Airflow: 3CFM, Speed: 4200±5%PRM, Noise: 22 DBA. Bearing Type: Oil Bearing; Lead Wire: USB; Length: 1m / 39.37 in. Package Included: 4 * DC 5V brushless cooling fans. Notice: 'DO NOT GET WET' or 'Put it in a humid environment'; Or it will stop working. ❃❃ If you meet any questions, you can contact us and we will help you.