Vktech 5Pcs Black Brushless DC Cooling Blower Fan 5015S 5V 0.1-0.3A 50x15mm Quiet sleeve-bearing design Ultra quiet MID speed brushless DC Blower Life Expectancy at 40 Celsius degree: 40000 hours Size: Approx. 50 x 15mm (D*H) Rating: DC 5V / 0.1-0.3A