Moonrays 91268 Solar-Powered LED Post Cap Light for 6x6 Posts, Black. Black plastic cap fits 6x6 posts, uses multiple solar panels to charge battery. Solar panel converts sunlight into free electricity, charges battery automatically. LED is energy-efficient, 2.4-lumen output runs up to 6 hours on a full charge. Designed to mount on top of 6x6 fence posts, includes mounting screws for wood. (2) warm white LEDs per fixture, 2.4-lumens . Ready to work out of the box, no-wiring necessary - double-check battery is installed and place in the sun. (1) rechargeable battery is included per fixture(AA 600-mAh NiCd). The Moonrays (R) brand is a registered trademark of Coleman Cable Inc.