Fractal Design Lumen S24 v2. Type: All-in-one liquid cooler, Fan diameter: 12 cm, Rotational speed (min): 500 RPM, Rotational speed (max): 2000 RPM, Noise level (low speed): 10 dB, Noise level (high speed): 33.2 dB, Maximum airflow: 56 cfm, Minimum air pressure: 0.23 mmH2O, Maximum air pressure: 2.34 mmH2O. Product colour: Black