High Speed 120mm FanFan size: 4.7x4.7x1.5in Speed: 4100RPM at full blast Airflow: 169CFM Current: 1.0A Power: 10W Interface: 5.5*2.1mm female plug Dual Ball BearingLong life with 6-years. It overcomes the problems of short life and unstable operation of oil bearing. allows the fans to be mounted flat or upright. Variable Speed ControllerRange of control in fan speed is 3v to 12v INPUT: AC 100V - 240V 50/60Hz Rated Current: 2.0A Speed control great for fine tuning, Varying the input voltage varies the speed. Completely adjustable from off to full blast. enables the fan to be powered through an AC outlet. Good DIY Cooling SolutionIt works great for DIY cooling fan or as an additional cooling fan for your needs. Such as Fireplace, Solder Station, Electronics Cabinet, Kitchen Window, DIY Aquarium Cooling, Cat Little Box, or any other application where an exhaust fan is overkill. Warranty & Packing ListWarranty: One