16.4 feet outdoor string lights With 50 Super Bright LED crystal globes. Each globe has a diameter of 17.5 mm, which is much larger than the others. What is the difference? This means you can get higher brightness and more gorgeous lighting effects. Unlike other black wire fairy lights, these battery string lights use transparent tubes to wrap string, making it consistent with the crystal ball style, which does not make people feel weird.10 brightness adjustment levels and 8 lighting modes to choose 1. Combination 2. In wave 3.Sequential 4. Slow Glow 5.Chasing/Flash 6.Slow fade 7.Twinkle/Flash 8. Steady on.