M   ade with a traditional Mason jar is a highly efficient solar cell, with rechargeable batteries and low energy LED lamps. Now you can store light in a jar with this high tech energy efficient solar light, When the weatherproof jar is placed outsiide in DIRECT sunlight, the solar cell in the Solar Moon Jar charges the rechargeable battery over a several hours. This energy is then used at night to power the three LED lamps inside the jar. The light is diffused by the frosted jar and gives it the appearance of moonlight emanating from the jar. It can be left outside in any weather conditions.  There are no visible controls at all - there is a clever light sensor inside that automatically activates the lights when it gets dark or lights are turned out! !