Detailed Product Description Solar HatDescriptionL:Two pcs Multicrystal Solar board 4.5V,60mA,0.27W.Battery bag is at the position of right ear.Switch is between two battery.When recharge three hours in mid-day,it provide 2 hours power. Material:100%cotton cloth,2pcs LIR2032 rechargeable battery,5 white led light,0.27w solor board.Size:head circle 58cm.