Features:- Non-Magnetism: The fan will not be magnetized and reduce the fan speed due to the magnetic rotor inside the Brushless Motor- Dimension: 40mm (L)x 40mm(W) x 10mm(H)- Revolution: 6600rpm @5V, 8500rpm @7.2V- Supply Voltage: 5V~6V- Ball Bearing System- Air Flow: 6.1 CFM- Pressure: 4.4 mmAq- Noise: 22 dBA