The Prism Solar Motion Light uses energy generated by the solar panel during the day to operate the light at night. There are three different modes. In the first two modes, it illuminates brightly when detecting motion, with the option for (1) light OFF, or (2) low light ON during off-motion times. The third mode functions as a medium brightness outdoor light, with the motion sensor deactivated. Assembled Dimensions: 5.12" L x 1.97" D x 3.74" H 100 Bright White SMDs Solar panel requires full sun during the day to charge Mount the light in a variety of outdoor locations: wall, deck, shed, fence, post, etc. Run Time: 8 hours when used on Mode 3 (180 lumen) Rechargeable battery included Plastic construction