- These string lights have 100 warm white LEDs for creating a cosy vibe- The 4-in-1 design lets you switch between string lights, a table lantern, hanging light or USB power bank- Simply wind the string lights back into the portable retractable reel for storage or travel- They're solar powered and charge in the sun, or you can recharge using USB- You can enjoy them all year round, as they're IP44 weather resistant