Material: CottonOutout Power: 0.1-3WPower Supply: USB CharingBattery Capacity: 600mAhCharging Time: about 1-2 hoursUsing Time: about 1-3 hoursHead Circumference: 58cm(22.83in)Size: app. 34x17x14cm(13.39x6.69x5.51in)Simple solid color, letters printed, pre-curved visor, round with top button, one size fits for men and women.Convenient metal buckle strap to custom fit the baseball cap to your head and ensure maximum comfort.Comes with a mini fan with 2 adjustable wind speed. Can be charged by USB cable, convenient to use.Made of cotton, breathable, soft, comfortable, wear resistant, suitable for summer wear.A golf cap that has a mini fan cooling the face. Great for the summer, travel, goft, and outdoor activities.Package includes:1 x Fan Hat Cap1 x USB Cable(other accessories demo in the picture is not included.)NOTES:1.Please Allow 0.4-0.8 inch Differs Due to Manual Measurement, thanks.2.Dimensions for items may vary slightly lesser or greater than listed depending on style.3.As different computers display colors differently, the color of the actual item may vary slightly from the above images, thanks for your understanding