Designed to work with small outdoor flagpoles. It ships with a collection of three angle-adjustable adaptors; it is compatible with all spinning poles and all one- inch diameter flagpoles. It measures less than 5 + inches in diameter and weighs only 5 ounces. Each adaptor features an angle-adjustable connection; this allows the user to move the light to enable the maximum degree of illumination relative to the position of the pole. Uses one rechargeable battery, included.