A professional manufacturer of decorative string lights, accepts the tests needed to improve our products, to accomplish what you need. Battery Powered The 4.5V output and high-quality copper wire has low heat, good conductivity, and is highly energy efficient. Easy to Use Easy to install, this light is compatible with most equipment with a USB port, like USB sockets, power adapters, portable power supplies, computers, and laptops. Quality You Can Trust With professional & friendly service, 's 13ft battery-operated LED string lights satisfy your needs. If you have any questions on this light, please contact us and we will do our best to answer your questions. Specifications Wattage: 12W Voltage: 4.5V Warranty: 12-month Lifespan: 50,000hrs CCT: 3000K Warm White
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