The Estrella LED Light from GoalZero is a portable 160-lumen light that can be used for illuminating a tent and campsite or as an emergency light. It doesn't have a battery, so it must be powered from a battery pack or 12VDC car/vehicle plug. The light can be chained with up to eight Estrellas or GoalZero's Light-a-Life lanterns. An individual on/off switch allows a chained light to be turned off without affecting the other lights. Its 15" flexible and bendable cord allows it to be wrapped around branches or tent poles. An included 9' extender cord features a patented carabiner for hanging the light.