4-pack solar fence post cap with plastic lens. Features 1 white LED (light emitting diode) per light that produces 4 lumens of light output. Includes a monocrystal solar panel and a rechargeable Ni-MH battery to charge the light using the sun’s rays. Up to 8 hours of run time on a full charge. Solar power means there is no need to hassle with power cords and electrical outlets. Ideal for use on deck and fence posts where illumination is desired.