Outdoor Solar LED String Lights, Waterproof Solar Powered Decorative LED Fairy Lights for Outdoor Outside Patio Garden Yard Decoratin (30 Crystal Balls, 22 feet, Cool White) Environmentally friendly LED solar lights: Eco Saving built in battery recharges itself during the day with a high-efficiency solar panel. It can continuously work more than 8 hours at night Water-resistant: The LED string lights are tested as IP44 rating, perfect for outdoor and indoor use. Automatically On/Off: Automatically charge during the day, and automatically light up in the evening.Press the power button to ensure the solar string lights is turn on Easy to use: Just 2 switch buttons, one is Light Mode (twinkling/constant), another is Power On/Off . Suitable for Indoor and Outdoor: These wonderful outdoor string lights illuminate during night, add warm and charming atmosphere to your gardens, patio, lawn, porch, gate, yard, etc