Efficient solar dragonfly string lights: The factory equipped sophisticated and 180 degree adjustable monocrystalline silicon solar panel plus the inbuilt 800mAh rechargeable battery. When the built in NiMH battery saves enough solar energy in the daytime， the string lights can automatically work for 8 to 10 hours at night. It can save electricity and money;Lovely and realistic dragonfly shape: 21feet long string with 30 plastic simulation dragonfly. The shape of dragonfly themed gift light is highly lifelike dragonfly， very lovely. When it is hung up， like a group of colorful dragonflies flying， it will make your mood cheerful and create a harmonious atmosphere. Suitable for bedroom， courtyard， terrace， balcony， BBQ， tent decoration;Function of waterproof: Dragonfly decor lights are solidly engineered to stand any weather， either rain， sun， or snow. All the components are IP65 waterproof enabled， making it suitable for both indoor and outdoor usage. Hanging it on the trees and flowers of the garden， it can provide vitality for your garden;8 lighting modes: Whether you want to the lighting modes of combination，waves，sequential，gradual，or chasing flash，slow fade，twinkle flash，steady on， the dragonfly light string can meet your needs. You can adjust different modes according to your mood;Auto on off: There is a built in photosensitive component in the solar panel， the drangonfly lights will turn on at dusk and turn off at dawn automatically. No need for manual operation， so convenient for lighting decor