Easily install this light around most standard table umbrellas to add ambient light to your outdoor gathering. A switch allows for white LEDs to provide brightness or amber LEDs to reduce the attraction of flying pests. Each light head contains eight LEDs. There's also an on/off switch with selectable dimmer. Light unit features a quick release button to open light for mounting or removal. Measures 2 1/2" high with a 7" diameter. Requires 6 AA batteries, not included.