About this item 8 Lighting Modes: The Christmas lights indoor can create different atmosphere with various light modes: combination, in waves, sequential, slo-glo, chasing/flash, slow fade, twinkle/flash, and steady-on. Adjust the modes by pressing the summary on the adapter, the shining twinkle lights will illuminate the darkness in every corner of your home. Timer and Memory Function: Press and hold the summary on the adapter until the summary turns green and the timer is enabled, the Christmas light outdoor will automatically cycle on for 6 hours and off for 18 hours per day, free your hands. Additionally, it also has a memory function will remember your last lighting mode. Expandable Christmas Lights: Each string light for outside is equipped with a male and female plug, could be extended to a maximum of 5 light string. The led Christmas lights feature brighter LED bulbs to ensure better visual effects, and the wire is made of durable material, softer and not easy to break. Waterproof and Safe: With IP44 waterproof design, the outdoor Christmas lights can withstand all outdoor weather, making them ideal for year-round decorating. Please note that the adapter is not waterproof. The twinkle lights for Christmas tree have passed UL certified, 30V low voltage is lower than the human body safety voltage, it will not get over-heated and safe for touch. Outdoor Indoor Decorations: This plug in fairy lights can be used indoors and outdoors anywhere you want to decorate. Perfect for decorating for bedroom, room, house, xmas tree, porch, roof, backyard, deck, barbecue, umbrella, fence, pergola, bistro, restaurant, Christmas, party, birthday and more.