Continuing the SickleFlow 120 series , Cooler Master introduces a few new models with brand new upgraded design features for enhanced performance. The new SickleFlow 120 fan blades were created with larger blades and increased curvature to optimize the air flow and air pressure performance. Strengthen structural frame design with added rib housing for durability. Improved dustproof and oil leakage prevention for beater life expectancy, .Features:New Air Balance Blade - Optimized fan blade design with increased curvature that improves air flow and air pressure.?Improved Frame Durability - Enhanced square frame structure with added rib-support for reducing turbulent flow, noise and increasing overall work efficiency.?New Bearing Sealant Two-tier sealing mechanism designed to improve dustproof capabilities and prevent lubricant oil leakage for extended life span and performance.Specification:- Product Name: SickleFlow 120 - Product Number: MFX-B2NN-18NPK-R1- Bearing Type: Rifle- Profile: Non-LED- Fan Speed (RPM): 650 1800 10%- Airflow (CFM): 62- Air Pressure (mmH2O): 2.5 10%- Fan Noise Level (dBA): 827dBA- Dimensions (mm): 120 x 120 x 25- MTTF (hours): 160,000- Rated Voltage: 12 VDC- Safety Current: 0.37 A- Connector: 4-Pin PWM- Warranty: 2 years