Wonderology &ndash; Science Kit &ndash; Eco Clock Wonderology is the kid friendly science line that makes learning a blast! Explore the mysteries of science like never before! The Eco Clock Kit lets you create a green friendly clock that actually tells time! Turn fruit into batteries that really work and power your Eco Clock! The Wonderology Eco Clock Kit is made for Young Scientists ages 8+. Includes: 2 Fruit Stands, 1 LCD Clock Screen, 4 Electrodes, 3 Connector Wires, 1 Mouth-Piece, 1 Instruction Guide