Air Volume Level 3: Weak wind Natural wind . Dual-Turbine Motor:The double structure turbine motor ensures energy-efficient yet with a powerful flow, it's designed to circulate air more quickly from 4 air inlets without needing the use of extra power. Wingless Design:You 't have to worry about hair being caught by fan blades. The angle can be adjusted at will. The neck can be big or small. The patented shaft design allows the angle to be adjusted at will without jamming the neck. Half-closed Air Inlet Design:Dust and sweat proof. Product name:Shaft hanging neck fan Battery capacity:2400mAh 3.7V Charging current:1A Input voltage:DC5V Gear position:three gears Product features:Cost-effective, two-way ramp wind guide design, long hair does not curl, the angle of the rotating shaft can be adjusted, and it is more friendly to thick necks. Colour:A:Blue Material:ABS Size:208x60.5x218mm Package Contents: 1 * Cooling Neck Fan 1 * Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.