The white colored Shadow Wings 2 120mm PWM offers whisper-quiet operation and reliable cooling at low revolutions per minutLow-noise operation of up to 15. 9dB(A) even at its maximum speed of 1, 100 rpmAirflow-optimized fan blades, resulting in a whisper-quiet operation yet solid coolingAnti-vibration mounting system that prevents transmission of vibrations to your PC caseRubberized fan frame minimizes vibrationsHigh-grade rifle-bearing technology that contributes to an operating lifetime of 80, 000 hoursSecure and easy installation of the fan with push-pinsPWM controlled fan speed through the motherboardProduct conception, design and quality control in Germany3-year manufacturer's Shadow Wings 2 fans are the perfect choice for all who appreciate maximum silence for their PC case.