Amazon
Size: Mini Size Cooling Fan, 25×25×7 mm Working voltage: DC 5 V Brushless Fan, Oil Bearing Connection: USB InterfaceNoise: about 26 dB (A), Life expectancy: 28000 hours (40℃) Usage: Perfect Cooling Tool--Cooling your Raspberry-Pi, PCB, Graphics Card, 3D Printer or other boards
Size: Mini Size Cooling Fan, 25×25×7 mm Working voltage: DC 5 V Brushless Fan, Oil Bearing Connection: USB InterfaceNoise: about 26 dB (A), Life expectancy: 28000 hours (40℃) Usage: Perfect Cooling Tool--Cooling your Raspberry-Pi, PCB, Graphics Card, 3D Printer or other boards