The Bulbs are set of outdoor string lights that are designed to provide lighting for your patio or outdoor space. These lights are 50ft in length and are waterproof, which means they can be used in all weather conditions without any issues. The ST38 50ft Solar Outdoor String Lights are designed with globe LED bulbs that provide a cozy, warm, and inviting atmosphere. Additionally, these lights feature 12+1 Edison vintage bulbs can offer a practical solution for outdoor lighting while adding a touch of style and elegance to your patio or outdoor space. Warm tips: 1. Each of the outdoor string lights will be wrapped well before leaving the shipped. You just need to hold the middle part of these string lights with one hand and straighten the strings out with the other hand. (starting from the plug) 2.Please tighten all connecting parts to ensure a proper operation. If single or a few light bulbs do not work, it's probably caused by disconnection between the small copper inside the socket and the light bulb base. In this case, you can use tool to bring the copper out a little so it can reconnect with light bulb base.