Solar PoweredSolar powered power supply design is energy-saving and environmentally friendly, built-in 500mAh battery. Automatically absorbs sunlight throughout the day and converts it into electricity in the battery. No UV rays, energy saving and environmental. Easy to useWireless setup and use. First use (be sure to turn on the switch), the solar deck lights should charge during the day for 6-8 hours under the sun, and will automatically light up for 10-12 hours at night. It can be mounted with provided screws. IP68 WaterproofSolar deck lights are made of aluminum alloy with IP68 waterproof system against all kinds of terrible weather like rain storm, a blizzard or daily heat for a long time, which makes it suitable for most kinds of environments. Widely ApplicationSolar deck lights are suitable for all kinds of scenes, such as deck, dock, path, driveway, garden, sidewalk, step, stairs, etc. Withstand pressure for moving cars (up to 20 tons), Safer on the way home!