1. SPECIAL FOR VALENTINE PARTY DECORATIONBeautiful red heart decorative lights for valentine day measures with 40lights,9.8Ft long.The string of bright red heart-shaped lights with 8kinds of lighting modes: combination/in wave/sequential/slo glo/chasing flash/slow fade/twinkle flash/steady on, a festive way to illuminate your mantels, house,doorways, railings, put around your front door, around a window or elsewhere, indoors or out and more. 2. Upgrade - USB and Battery Charge for Choose40 LED Heart Shape string light is great for Valentine's Day, Mother's and Father's Day, Wedding Anniversary, Birthday, Holidays and Party Favors Supplies .Upgrade design- waterproof The string light are made of IP44 waterproof. No matter it placed anywhere or in bad weather, it can still work.Requires 3 AA batteries (not included),can also USB charge. 3. 8 Light Mode OptionsOne-button control 8 flashing light modes, Just press the button and you can switch to other flashing modes.These string light are awesome for any parties, especially for an 80's themed party. Everyone loves them and wants to be decor them. They will instantly set your party apart from the others! 4. FUNNY VALENTINE DAY ACCESSORIES , lightweight and easy to use with Indoor and Outdoor Weatherproof Battery Box,valentines day decorations accessories red LED heart string lights battery powered, so there's no plug-in cord to deal with,Safe low voltage and long battery life thanks to efficient led lights.