SCCCF 40mm USB Fan with 3 Speed Control USB Ventilator 5V Cooling Fan Compatible for phone flat VR Gear, Aquarium, Roku, Router, Raspberry Pi, Cosplay, Helmet Receiver DVR Playstation Xbox Computer Cabinet Cooling Mini Cooling Fan: SCCCF 40mm mini USB cooling fan with 3-speed control, size and super lightweight design, perfect fit for DIY cooling and narrow place. High Quality: Metal grill on front side, protect cable and your hands; High quality bearings, durable; 100cm/3.3ft USB cable , meet connection needs.Please confirm the size by pics before purchasing Long Life:Dual-ball bearings have a lifespan of 65,000 hours and allows the fans to be laid flat or stand upright. Widely Used: Suitable for ventilation of VR glasses /TV box /Raspberry pie /Router /Small PC Case and other small electronic equipment ventilation