Check the listing for details. STEM Projects Walking Dinosaur. Condition: New. Listed at 13.99 USD. STEM Projects Walking Dinosaur BUILD! WIND! WATCH IT WALK! Easy to assemble robotic dinosaur that walks with the help of a wind up mechanism. Includes cool fact card all about wind up mechanics! Set includes: plastic dinosaur parts, wind up mechanism, easy to follow instructions and learning card. If you are not entirely satisfied with your purchase, we’re here to help. Feedback:We appreciate your FEEDBACK!!! If you have had a wonderful experience shopping with us, please leave us positive feedback! We strive to bring you the best products, for the lowest prices, all while offering excellent customer service! If you are not satisfied, please contact us via eBay messages, so that we may resolve any issues promptly. Thank You for Shopping with BargainRanger!