9905 Sea Lab Camper

The Big Jim Sea Lab Camper, Mattel reference 9905, was officially marketed in Italy as "Laboratorio Mobile Ricerche Sub", meaning Mobile Underwater Research Laboratory. It was released across the European market in 1977, although some English-language collector databases date it to 1975. This vintage vehicle transforms from a camper into a fully equipped mobile research base designed for Big Jim's underwater exploration missions. The set includes the laboratory vehicle, an inflatable boat, and several accessories related to scuba diving and marine research. Its distinctive yellow and blue color scheme, fold-out side laboratory, and innovative design make it one of the most sought-after Big Jim vehicles among vintage Mattel collectors today.