Here's what other sites are saying:
The Goal Zero Estrella 3W LED Light illuminates base-camp tents and pre-dawn hikes, and it adds security and a beam of comfort to expeditions big and small. This light's 3W LED bulb emits 140 lumens of light anywhere when plugged into a rechargeable Goal Zero power pack (sold separately). Clever wiring allows you to daisy chain up to 11 additional lights so you can set up a fully functional base-camp headquarters.
With its low power draw the Goal Zero Estrella 3W light can keep the trail, campsite, or tent lit for hours at a time with out a huge draw of power from a power source.
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