CRONA S CR-XRS1 Features: An Alternative to Convention With the Low-key black back frame, Crona S features the indistinct RGB LED halo. By the design of multi-hole back frame, Crona S allows for the air exhaust acceleration.Crona S is the combination of Low-key design and high performance. Controller on Hand, Lighting is Planned With the included Crona Controller and Remote, the Crona supports on the fly switching between up to 14 speed/color adjustable lighting effects. The Crona Controller supports both 12v and 5v Addressable inputs, making it compatible with almost all RGB enabled mainboards as well as a stand-alone RGB controller. Nullify Vibrations With Built In Acoustic Absorbers Included with every Crona are four pre-installed integrated Acoustic Absorbers. These thick silicon pads form a buffer between the fan and heatsink body, nullifying unwanted vibration noise. Pleasing Your Ears With Acoustic Engineering Crona 120 ARGB fans feature CRYORIG's HPLNTM ( High Precision Low Noise )bearing system, offering stable and precision rotation eliminating excess vibration and noise. Specifications: Dimension L120 mm x W120 mm x H25.4 mm Weight 157.1 g Rated Speed 400 ~ 1700 RPM ±10 % Noise Level 16.5 ~ 29.7 dBA Air Flow 60.6 CFM Air Pressure 2.65 mmH2O Ampere 0.15A