FeaturesDraw a working circuit and cold solder componentsElectric Paint is water-based and nontoxic3 x Unique character cards: Opposites Attract, Take me to your LEDer, and Radiation Ray30 minute assembly timePaint dries in 10-15 minutes1 x Electric Paint Tube 10ml3 x LEDs3 x Coin cell batteriesLEDs may last up to 10 days depending on battery lifeAges 6+Conductive Encounters flashing card set includes 3 cards and all the equipment to make a basic circuit.The Bare Conductive Flashing Card Set Conductive Encounters set includes 3 cards with unique character designs along with all the necessary materials to make a basic circuit such as a 10ml electric paint tube, 3 LED lights, and 3 coin cell batteries.This is a resistive paint that may not be suited to high current applications such as heated rear window track repairs and other higher power applications (in excess of 100ma), for these applications a silver loaded paint, conventional wiring and soldering are the main practical solutions.