1Solar Panel: The string lights are equipped with an advanced 180-degree adjustable monocrystalline silicon solar panel, plus a built-in 800mAh rechargeable battery that can be charged without a power outlet or cable. 2IP65 Waterproof: Waterproof string lights with IP65 waterproof function, can work safely in rainy days, prevent short circuits and fires. 330 LED Bulbs: 5 meters long LED string lights, 30 LED bulbs, solar powered, plastic material, can be used for a long time. 4Long Battery Life: When the built-in NiMH battery stores enough solar energy during the day, the string lights can automatically work for 8 to 10 hours at night. 5Wide Use: These outdoor balcony lights are perfect decoration for patio, pergola, bistro, backyard, deck, BBQ, umbrella, dinner, birthday, Christmas, New Year party, etc.