2 Ball Bearing fan for Extended Life and High Performance Extreme speed with Excellent Airflow Certified by: UL, FCC, CE, RoHS, WEEE, REACH b-BlasterPWM Series 120x38mm Speed(RPM): 1300 to 6500RPM±10% Current(A): 2.5±0.1A Power(W): 30 Airflow(CFM): 318 Airflow (CFM): minimum 42 Static Pressure (at zero flow for pwm): 5.0mmH20 Static Pressure (max for pwm): 26mmH20 Rated Voltage(V): 12 Operating Voltage Range(V): 10.2~13.8 Noise Level at Max Speed(dbA): 64 Operating Temperature: -10°C~70°C Storage Temperature: -20°C~75°C Frame Size(mm): 120x120x38 Weight: 265g Bearing: 2 Ball (Japanese ball bearing) PWM Connector Mini 4 pin 4 wires Life Expectancy: 60000