The Ultratec SLS is a silicone bottle that doubles as a solar LED lantern. The lid holds a solar panel and an LED light, and the tough silicone and ABS body is waterproof, so it can also serve as a dry storage container for a phone, lighter, matches, first-aid items or survival gear. Retail information for the blue version gives a 1,000 mAh 3.7 V lithium polymer battery charged by solar or micro-USB, Turbo (100 lumens) and High (50 lumens) modes plus flashing, an IP66 rating, about 90 x 90 x 180 mm and about 200 g. A hanging handle lets you hang it in a tent or clip it to a pack. This listing is the white version; colour aside, it is assumed to match the blue model.