- These firefly string lights have 200 warm white LEDs for creating a cosy vibe- They're solar powered and charge in the sun, so you won't have to deal with cables or batteries- They automatically light up at dusk and turn off at dawn, so you can leave them to do their thing- You can enjoy them all year round as they're IP44 weather resistant- They're lightweight, so you can decorate shrubs, trellis, parasols, and doorways