Its solar panels collect energy from the sun all day and then its LED light shines 100-lumens of brilliance over your flag at night. The three recharging NiMH AA batteries power light for up to 12 hours and continue to recharge for up to 24 months. Designed for use with 20-ft. and 25-ft. in-ground flagpoles or telescoping, single shaft and four- or five-piece sectionals. No special tools or wiring required for installation. Includes instructions. Dimensions: 7-7/8 x 2. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Solar Lights & Statuary.