Quench your thirst for light with the Glo Bottle-Top Light Turns any average drinking bottle into a handy lantern. Simply screw this cool cap onto a standard 28mm-thread bottle Ideal for plastic or glass bottles Contains 3 bright LEDs and uses the liquid inside the bottle to diffuse the light Choose any colour glow by filling your bottle with different colour liquids Ideal for lighting up space on a camping trip or at a festival With 75+ hours of battery life Powered by 2 x CR2450 batteries (included) Save 67% on the Glo Bottle-Top Light - now only 4.99 pounds instead of 14.99 pounds