LIGHT UP THE AIR Get form and function that blows you away. Meet the Razer Kunai--performance aRGB fans powered by Razer Chroma(TM) RGB with fan blade technology inspired by elite military aircraft for stealthy, high static pressure cooling, and addressable LEDs for unique case designs. QUIET, POWERFUL HYDRAULIC BEARING FAN Cool your rig with high airflow aRGB fans packed with LEDs and lighting effects powered by Razer Chroma(TM) RGB. With high static pressure performance and lowered acoustics, the Razer Kunai is the perfect choice for gaming PCs. CONNECT UP TO 8 FANS AT ONCE Daisy chain and connect up to 8 Razer Kunai fans to Pulse Width Modulation and aRGB controllers to create immersive lighting effects. Supported by Razer Synapse software for ultimate customization. PWM FAN CONTROLLER SUPPORT Whether you need maximum airflow to cool your PC or run quietly at lower RPMs, our Pulse Width Modulation fan controller allows you to conveniently adjust fan speed based on your needs. sold separately POWERED BY RAZER CHROMA(TM) RGB Unlock ultimate aRGB customization with 16. 8 million colours, light patterns, and effects which react to your gameplay. Get the world\'s largest lighting ecosystem and control it from one platform. Specification: Quantity: 3 Size: 140MM RGB: 22 addressable LEDs Technology: Hydraulic Cooling: 500-1600 RPM Airflow: 34. 48 - 81 CFM Static Pressure: 0. 15 -1 .31 mm- H20 Noise: 15-30 dBA Fan Life: 60, 000 hours Dimensions: 140 mm (L) x 25 mm (W) x 140 mm (H) Weight: 207 g / 0. 45 lbs Power: 4-pin PWM Warranty: 2 Years Software: PC with Razer PWM controller, Razer RGB controller, Windows operating system, Razer Synapse software.