Laguna PowerGlo Submersible 40 LED Pond Lights are extremely compact and can be used almost anywhere in or out of the water to produce stunning lighting effects. LED lights provide several benefits over regular bulbs: they're more energy efficient consuming less wattage than incandescent lights and they last longer. The lights are pre-wired to make installation easy simply place in the desired location and connect to the electrical outlet. The Light Set includes 2 lights with 40 LED bulbs in each light and a 12-volt transformer with automatic light sensor. Length of electrical wire: 10 m (22 ft) Spacing between each light: 55 cm (21.6 in).