Ultra low noise fan, 120x120x25mm, 12V, 4-pin PWM, max. 1200 RPM, max. 12.1 dB(A), >150,000 h MTTF Next-generation 120x25mm A-series design provides unprecedented quiet cooling performance, ideal for CPU coolers and watercooling radiators State-of-the-art engineering (AAO frame, Flow Acceleration Channels, record tight 0.5mm tip clearance) and construction (Sterrox LCP material, metal-reinforced hub, metal bearing shell, etc.) Ultra-quiet 4-pin LS-PWM version, ideal for semi-passive setups (fan stops at 0% PWM) or ultra-low-noise applications that require PWM control Includes anti-vibration mounts, radiator gasket, fan screws, extension cable and y-cable for running two PWM fans on the same header