Fractal Design Lumen S28 v2. Type: All-in-one liquid cooler, Fan diameter: 14 cm, Rotational speed (min): 500 RPM, Rotational speed (max): 1700 RPM, Noise level (low speed): 10 dB, Noise level (high speed): 35.5 dB, Maximum airflow: 78 cfm, Minimum air pressure: 0.3 mmH2O, Maximum air pressure: 2.05 mmH2O. Product colour: Black