6.8 million colours Equipped with 2 independent rings and 9 addressable LEDs on each ring, Pure Duo fan provides excellent light coverage, uniform color and brightness. The built-in LED ring can illuminate your design with 16.8 million colours. PWM-controlled fan with 9 fan blades The PWM-controlled fan with a unique 9-flag design was designed to generate greater air flow while maintaining silence. Pure Duo fans provide more efficient cooling during intensive operation. Anti-vibration fixing system In-Mould rubber anti-vibration pads suppress fan vibration, allowing it to work at higher levels without lowering the noise level. The fan has 80% coverage of all corners, maintaining low noise levels during operation. Just switch LED lighting modes with controller The controller consists of 7 preset lighting modes: wave, full light, rgb spectrum, flow modes, pulse, and flashing, which can be easily switched even without the addressable RGB 5 V socket on the motherboard. Users can not only switch modes, but also intuitively change colors and speed of lighting.