Solar LED Deck Light. Decks are very dark at night and it is hard to see the railing and walking down the steps can be pretty scary and even dangerous. These nifty little solar deck lights light up your steps, railing or deck edges. They add beauty and even more importantly, prevent you from falling or tripping. Two screws are all it takes to install these lights. The sun does the rest during the day and the rechargeable battery lets the lights shine at night. Each box contains 4 deck light. Requires a AAA battery to operate. Battery included. Dimensions: 3.5" L x 3.75" W x 1.2" H Weight: 0.55 lbs.