Our LED solar wall lamp is equipped with an AA battery that is charged by the sunlight. The outdoor solar light can also be installed under the roof, or fixed on the fence. With two 0.06-watt LEDs inside, each solar lamp can provide 0.12-watt lighting. During the day, the light converts daylight into electricity and recharges the battery. At dusk, it turns on automatically and runs on the electricity stored during the day. How long the light lasts depends on the amount of daylight stored. The solar wall lamp is environmental friendly, energy saving, and requires little maintenance. Thanks to the included mounting materials, the outdoor solar light is easy to install. Delivery includes 12 pieces of wall lamps.