Low Voltage & UL Certified - 29V low voltage transformer and whole set string lights including string wire, LED bulbs and plug have been certified by UL to ensure & maximize the safety. Perfect for Christmas, halloween, Easter, weddings, party, festival, holiday decoration.

8 Lighting Modes Controller With Memory Function - Our upgraded string lights with 8 different working modes: combination, in waves, sequential, slo-glo, chasing/flash, slow fade, twinkle/flash, steady on. The controller is designed to remember the last setting after cutting off the power. No need to set the light again.

End-to-End Expandable - Each set has an End-to-End plug, which makes you can connect max 4 sets together to cover large areas. Each string light's is 105 feet, the max expandable length is 420 feet. What's more, with our upgraded Stay-On Bulbs design: each bulb Is Individual, if one of the bulbs burned out, the rest bulbs will Stay On.

IP55 Waterproof for Indoor and Outdoor - IP55 Waterproof and high quality material designed string lights perfect for both indoor and outdoor decorations. The strong construction makes it tough and sturdy, not easy to break apart and overheat after long hours of usage.

100% Satisfaction Service - We stand behind all our products 100%. All of our led fairy lights come with a full 12-month for replacement and 60-day money back. If for any reason you are not completely satisfied, let us know and our customer service team will help you return or refund.