High Performance solar lights stays lit for up to 12 hours Lights up automatically every night / auto - off switch High output surface mount LED technology for brilliant white light 3x brighter than standard LEDs 2 long life AA Ni-MH rechargeable batteries included Antique electroplated Copper Will fit over an actual 5.5'x5.5' post (inside base diameter 5-5/8' x 5-5/8') Quick and easy Do It Yourself installation. 12 Lumens / 4500 5500 Kelvin Patent No: D580,581S