Free Sunlight Forever! A jam jar stores jam. The Sun Jar collects and stores sunshine so that you can use it at night. Leave your Sun Jar outside or in a sunny window in DIRECT aunlight for several hours to charge.  Includes solar power cell, rechargeable battery, energy efficient LED batteries, and waterproof seal. Available in yellow "natural light" (orange glowing lamp, similar in brightness to a candle) or "cool light" (blue glowing lamp, similar in brightness to a candle).