Illuminate your indoor and outdoor spaces with the vibrant colors and soft glow of our diamond faceted pre-lamped C9 holiday strings on brown wire! Featuring opaque plastic C9 shells over 5mm wide angle LEDs, these warm white lights bring the true colors of LED without the harsh brightness seen in many other sets. Designed to cover a substantial area, these C9 holiday lights outdoor span a generous 25 feet with 12 inch bulb spacing. They are built with a stackable, fused plug and end sockets, so you can expand your display in all directions to almost any length--up to 43 total sets from a single outlet! Whether you're decorating for the holidays or crafting intricate lighting designs, these holiday lights are versatile, safe, and dependable for both indoor and outdoor use. These outdoor/indoor C9 LED lights aren't just beautiful, they're also energy efficient. Consuming only 4.8 watts per string, they offer a cost-effective solution for your decorative lighting needs. No special power supply or adapter is needed as rectification to eliminate flickering is done right on the string itself. Pre-lamped strings make installation a breeze. All bulbs on this set are built in and non-removable, so you can simply open the bag and begin wrapping your display. Shatterproof plastic and negligible heat output make these strings easy to handle during installation and safe for use in up-close applications like stair rails, mantles, and indoor trees.