This unit is in excellent condition and appears to have been hardly used. In original plastic. Component packages still have staple closures in plastic and cover. No scratches or signs of use. Comes with manual. Operates with a 9 volt battery. Box isn't perfect but good. See pics. Discover the wonders of electronics and electricity with this educational kit toy from Radio Shack. With 75 exciting projects to choose from, this kit is perfect for anyone interested in science and nature. The kit includes electronic sensors that can detect light, sound, temperature, and much more. The brand of this kit is Radio Shack and it comes without any custom bundle. It is recommended for any age group, but the age level is specified for 12-16 years and 17 years & up. The kit falls under the categories of Toys & Hobbies, Educational, Science & Nature, and Electronics & Electricity. So, get ready to unleash your inner scientist and have fun with this amazing kit!