Pack of 5 Brushless DC Cooling Fan Blower 5015S 5V 0.1-0.3A Rating: DC 5V / 0.1-0.3A Size: Approx. 50 x 15mm (D*H) Quiet sleeve-bearing design Operating Temperature: -10 Celsius degree to +60 Celsius degree Life Expectancy at 40 Celsius degree: 40000 hours