This is an awesome science kit designed by Middlesex University in the UK! The Robot Duck has become a fast favorite for robot lovers. The kit includes all the materials kids need to construct a wacky looking robot that bears more than a passing resemblance to a duck, including motor and small parts. Despite its robotic nature, the finished duck is quite charming and will soon feel like a member of the family. Approx 4 inches wide when assembled. Requires 2 AAA batteries and small screw driver, not included. Ages 8 and up. fax or by telephone. Product Number TS3648