Solar Power Supply---Solar power supply design is energy-saving and eco-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 use---First time 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 8 to 12 o'clock at night. Hecan be mounted with the supplied screws. IP68 Waterproof---Solar deck lights are made of aluminum alloy with IP68 waterproof system against all kinds of terrible weather like rainstorm, blizzard or daily heat for a long time, this whomakes it suitable for most types of environments. Widely Application---Siedinlar Solar deck lights are suitable for all kinds of scenes, such as patio, dock, path, driveway, garden, sidewalk, step, stairs, etc. Pressure resistant for moving cars (up to 20 tons), Safer on the way back