Fractal Design Prisma SL Series fans allow your system to truly shine. Six hub-mounted LEDs work in harmony with a white semi-opaque outer ring and fan blades to produce a beautifully uniform glow across the fan's entire surface. As with any Fractal Design fan, silence remains a central focus with premium LLS bearings as standard the entire series, ensuring Prisma is seen, Nt heard. Prisma's striking selection of colors includes red, green, blue and white with a choice of 120mm and 140mm sizes to make any build shine brilliantly. Six vibrantly colored hub-mounted LEDs Specially designed fan blades and outer ring produce a uniform glow LLS (Long Life Sleeve) bearings provide silent operation with a long lifespan Trip Wire techNlogy introduces a micro-turbulent layer for enhanced blade efficiency Aerodynamic stator struts with embedded wiring reduce Nise and turbulence Easily concealed black stealth ribbon cable Available colors include Red, Green, Blue, and White 120mm and 140mm sizes available.