The PH-F120SP LED series, 120mm Premium fans from Phanteks is designed with the unique Maelstrom concept technology. With 4 LEDs attached to the PH-F120SP, these fans will make any case more aesthetically appealing. The ON/OFF switch allows user to enable or disable the LEDs. They are specifically designed to overcome high static pressure, blade deflection,andnoise challenges. Affordable and durable, the PH-F120SP LED is a great choice for case fan upgrades. The UFB Bearing composed by MOSS and SSC Systems creates a longer lifespan and adds stability to the fans. Silence and durability are now possible and a standard with the new PH-F120SP_BLED.