These 17.7m listed G40 globe string light is made with heavy-duty commercial grade wire and tightly sealed all-weather sockets that won’t sustain damage. The built-in internal fuse increases safety when used. Durable wire can withstand all year-round usage but still, keep strong. Solid 20AWG wire core inside to prevent the LED string lights from getting overheated after a long time of usage. IP65 commercial grade waterproof strand patio lights for your exterior decoration (even in heavy rain). Please note that the plug is IP44 waterproof, don’t put it in heavy rain.