[16 Million Colors Changing Christmas String Lights] Our Led tree lights offer a wide spectrum of colors, including single colors, bi-colors, tri-colors, and multi-colors for year-round lighting decor. Choose from multicolors, white, red & white, red & green, red white & green, green & white for Christmas; red white blue for July 4th; orange, purple, orange & purple for Halloween; green for St. Patrick's Day; and red/pink/purple for Valentine's Day [UL Safety Adapter App & Remote Control] Use the app to customize colors, modes, brightness, speed, group control, and timing. Some functions can also be controlled via the remote. Tailor the lighting to suit your preferencesUL certification low voltage power adapter ensures safe use. Multifunctional remote, you can set different colors, modes, set timing, adjust brightness speed, etc [Group Control] Create a group for multiple sets of fairy lights to control them all simultaneously, saving time and enhancing convenience. The built-in memory function remembers the last used mode, eliminating the need to reset each time [Plug-in String Lights] With an IP44 waterproof rating, these outdoor string lights are suitable for indoor and outdoor use. Illuminate any space with these colorful LED fairy lights, enhancing the ambiance both indoors and outdoors.NOTE When using outdoor, please kindly protect the power adapter and electric transformer from the water! [Music Sync] Elevate the ambiance with music rhythm modes. With 4 music modes - 5 colorful sence modes - a built-in high-sensitivity microphone, the lights change along with the rhythm or melody. Match the rhythm with 16 million available colors for a romantic and dreamy atmosphere, extremely convenient to set this Christmas tree lights to your visually stunning light show [Widely Application] This twinkle lights can be extended to meet your desired decoration needs.It has a bright and colorful Christmas atmosphere. Perfect for families, parties, gardens, bushes, yards, Christmas decorations, holidays, shopping malls, terrace decorations! Not only amazing to light up your bedroom, kitchen, wedding, yard, party, Christmas Halloween, Valentine's Day, St Patrick's Day, New Year, July 4th, Easter, etc. Just enjoy it!