About this item 【Auto On/Off】- Owing to the built-in light sensor, the star string lights can automatically work for 8 to 10 hours at night once the built-in battery saves enough solar energy in the daytime. 【Energy Saving】- Charged with solar energy, eco-friendly and without electric cost, the battery can work for more than 18 months. And the battery is replaceable for long lifespan use. 【8 Gorgeous Lighting】- Beautiful and brilliant lighting modes include waves, combination, sequential, gradual, chasing flash, slow fade, twinkle flash and steady on. 【IP65 Waterproof】- Both the string lights and the solar panel are IP65 Waterproof, making them suitable for indoor and outdoor use, and not worry about weather damage. 【Wide Use】- These beautiful star lights are the perfect decoration for terrace, pergola, bistro, backyard, deck, barbecue, umbrella, dinner, birthday, Christmas, New Year parties and more.