2" - 2-1/2" Galaxy Solar Ornamental Light Post Cap (Box of 24)Because this superior cap utilizes a solar power cell and 4 LED lights, this light post cap is guaranteed to provide about 12 hours of light usage. With automatic on and off functionality, you never need to worry about getting the timing right or accidentally wasting energy. This cap requires NO wiring and comes with the required rechargeable batteries. No wiring needed Lasts up to 12 hours Solar powered Long life dual NiMh rechargeable batteries