Dual-Ring Design The Prizm ARGB series case fans come in two sizes, 120 & 140mm. They feature a dual-ring aperture design, which means that you can display RGB effects on both sides of the assembly. 18 Independent RGB LED Beads Each LED bead can emit a variety of lighting colours to enrich your vision. Motherboard Sync Addressable RGB LED Lighting Enjoy nearly 16.8 million customised RGB colours & effects through compatibility with top-end motherboard manufacturers. ARGB LED Lighting Mode With up to 16.8 million colours, coordinate your own custom schemes for endless variety. PWM Intelligent Case Fan Fan speed automatically adjusts according to temperature, effectively reducing system noise while achieving excellent heat dissipation. Hydraulic Bearing Prizm fans use hydraulic bearings to reduce noise & friction whilst lasting up to 40, 000 hours. Shock-Absorbing Pads on All Four Corners Shock absorbing rubber pads at all corners protects the fan & reduces vibration noise between the fan & the chassis.