ER CHEN LED String Lights Plug In, 200 Leds on 66ft Copper Wire Starry Fairy Lights with 12V Power Adapter For Home Christmas Wedding and Party (Blue) QUALITY ASSURANCEEach product of ER CHEN has been through rigorous testing before shipment, when you receive the product if you find any problems, we will unconditionally offer you a free replacement. Consistent Brightness200 pcs super bright blue LED lights on 66 feet20 meters long ultra thin copper wire with 4 Inches distance between LED bulbs, and without voltage drop, the brightness is steady and consistent. Flexible, Durable & WaterproofMade from high quality 3-Strands copper wires, this fairy light is durable enough to experiment with any shapes as you like. The copper wire parts of the string lights have IP65 waterproof level which is perfect for both indoor and outdoor decorations.(Warm Tip: The power adapter is not waterproof, it should be covered if used in rainy days) Safe to TouchString lights are enameled copper wire and low current ensures that the copper wire is insulated and won't be overheat. After many hours of continuous work, you can still touch it safely. WarrantyWe support Led String Lights 12 months warranty, 60 days Money Guarantee, 24hrs Customer Service. If you have any problem with this item, please contact us directly, and we'll provide help for you.