Specification: Material: Sliver Copper wire Light Color: White/Warm white/Multicolor. Voltage: 2X AA Dry Battery / USB Power / 2 x CR2032 Battery(Not included) LED Quantity: 10LEDs / 20LEDs / 50LEDs Total Length: 1M / 1.5M / 2M / 5M Features: High brightness, low power consumption Outdoor and indoor decoration light Made of high quality copper material, durable for daily use Very low heat generating, besides saving light power Energy-saving and environmentally friendly. Long lifespan: more than 100000 hours. Safe and environment-friendly, no radiation or pollution elements. Light up your holiday party with the flashing string lights Bright fairy lights to decorate your Christmas, wedding, party, festival, etc.