Automatic: Once charged, turns on when it becomes dark and off in the daytime. Environmentally friendly: Powered by a solar panel to save energy and money. Colour Options Choose from warm white, cool white or multi-colour. Decorative Light: Get a solar-powered fairy light mason jar. Safe: Long-life LED bulbs emit low heat, making the jar safe to handle even after long use. Get creative: Removable lid means you are free to rearrange the fairy lights as you please and add seasonal decorations to the jar.