High Quality String Lights: LED Firecrackers Lights made of high density LED and high quality copper wire, more solid and durable. The waterproof design allows the string lights can be used not only indoors, but also outdoors in rainy or snow weather Timer & Memory Function: Set your preferred timer duration (6 hours on/18 hours off) and the lights will automatically turn on and off, saving energy, more convenient and efficient. And built-in memory chip can save your last setting modes, no need to reset every day Powered by USB with a high-performance , energy-saving and eco-friendly Multi-mode control】8 glare modes for you to choose, including combination, in the waves, sequence, slo-gol, chase or flash, slow fade, coruscate, always on, off, multiple modes emit warm light and generate romantic breathing Perfect Christmas Decorative Lights: Ideal for both indoor and outdoor adornments, our versatile lights are perfect for Christmas trees, bedrooms, mantelpieces, parties, weddings, kitchens, bathrooms, holidays, and more.