This portable neck fan frees your hands, 360° rotatable neck and adjustable 3-speed wind speed, you can adjust it freely according to your needs. Ideal for home, office, travel , sports, etc. Wear it on your neck when doing sports outdoors and put it on the desk indoors. Features: Portable neck fan release your hands, you won't feel tired or uncomfortable for a long time, easy to use. 3-speed wind speed adjustable, just press the power button to adjust. Built in 2000mAh / 4000mAh batteries long duration, 2.5-4 hours / 5-12 hours of operation after fully charged. 360° rotatable neck, 180° rotation, you can adjust the wind direction. Bladeless design, you don't have to worry about hair getting caught by the fan blades. Ideal for people cooling, indoor and outdoor sports, like camping, running, reading, etc. < br> Features: Material: ABS Color: pink, green, white (optional) Battery capacity: 2000mAh, 4000mAh (optional) Charged input: D C7.7V, 2A (Max) Powers: 5W Wind speed: 3 gears