Air volume: 38CFM 47 JY 240 ARGB black FREE controller-1 Fan size: 120 * 120 * 25mm Power interface: 3-pin/4pin Fan speed control: 2200 ± 10% RPM Product size: 274*120*25mm Rated speed PWM (rpm) 800~1800 rpm+/-10% Air flow rate (cfm) 30-75 cfm Connector 4pin (Fan Power PWM)+4pin ARGB connector Rated voltage DC 12V Noise 25-32dBA Lifetime (h) 40000 Rotational speed 2200 ± 10%