These coasters, which come in a set of 4, light up and give your drink the same cold, blue glow of the Arc Reactor from Iron Man 3. They protect your table from your beverage of choice much like the Avengers protect the Earth.
Materials: Plastic, aluminum, LEDs (contains no palladium).
Three rubber feet on the bottom of each.
Batteries: 8 3V CR2032 button cell batteries (included – 2 each).
On/off switch on the bottom lets you control the light.
To conserve battery, light turns off after 5 minutes.
Toggle on-off switch to get them to glow again.