Now I can enjoy the deck with nice lighting and don't have to used house light. These four solar deck lights are easy to use and install. You get everything you need to get started; you get 4 light fixtures, 4 plastic anchors,screws,and a instruction manual. Each these deck light have 1 AAA size 600mah rechargeable battery. Just press on the bottom of deck light and let the sun do it magic. It automatically turns on at dusk for up to 8 hours of nighttime illumination. Get ready to relax with perfect lighting.