Features - Will fit within 3-7/8" square post - Automatic on/off sensor - Bright white LED lighting Descriptions - These solar cap post lights will only fit base within dimension 3-7/8" x 3-7/8" posts. - 1 ultra bright white LED with 10 lumens / 4000 – 5000 Kelvin, which lasts up to 100,000 hours. - Lights up automatically every night / auto - off switch - Weatherproof – designed to protect the lights from natural elements. Pre-installed rechargeable AA battery, easy to install and no wiring required. - Lights can be installed on flat surface with attached frame as deck lights. Wall Plugs and screws included.   Production dimensions Depth (in.) 5-3/4" Width (in.) 5-3/4" Height (in.) 4-1/2" Color/Finish Copper Material Plastic