The lightest, brightest LED cap available. Converts water bottle into a solar powered lantern. Small and lightweight (just 2.6oz) cap fits on any “standard” water bottle (2″ wide mouth) converting your bottle into a solar-powered lantern.
The new contraption is safe, tough, fully sealed light system.  It includes four super-bright white LEDs.  It’s high output solar panel charges fast and fits all standard 2.25″ diameter bottles.  Other features include:  weatherproof, daylight sensor to turn  off automatically, weighs just 2.6 ounces.  Note: water bottle not included, you must furnish your own