Computer Warriors Calculator Techno-Tank w Dekodar Mattel 7723 1989. Tank and figure are in excellent condition. One small spot on the tank keeps it from being mint. Calculator has not been tested. Battery is dead and needs replaced. Comes with Dekodar in great condition. Instructions included as well. Box does show wear. Box is also missing the inner support to hold the action figure and tank in place. Please see pictures for condition of items.