A bright LED in the lid of a mason jar, with solar battery Unique magnetic on/off switch. No batteries required. Charge for a few hours in the sunlight. A full day of sunshine with clear sky will offer between 6 - 10 hours of light at night. Perfect for camping, backyards, and loss of electrical power emergencies High quality, durable glass, sustainable. Perfect for decorating, since you can put all kinds of small ornaments inside the jar Indoor and Outdoor use. Numerous design awards