The speed is 1000 / 1200 / 1500 rpm (x2) and the airflow is 23.9 / 27.9 / 31.98 CFM (x2). Noise value approx. Pls con-nect us for ANY products issues. 【Multiple protection】: The 120mm USB computer fan is equipped with eight detachable rubber buffers at the bottom, making it safer and more stable.
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