Enbrighten Cafe LED String Lights.

Perfect indoors and out, these string-style lights are great for your office or studio, deck and patio lighting, home accent lighting, and for adding style to and improving the atmosphere of an outdoor get-together.
They feature lifetime LED bulbs that never need to be replaced, and are made from unbreakable acrylic that can withstand a ten-foot drop and are weatherproof, making them perfect for use year-round. Enbrighten LED Café Lights by Jasco include 12 bulbs on a 24-foot string and are linkable up to 350 feet, so you will be sure to have as much light as needed to illuminate any space.
This product is UL listed for permanent indoor/outdoor installation and is backed by a limited-lifetime LED warranty.