Above is pictured, left to right, the Hydro Copter box front and side. The box is almost square in proportion. The side art is especially interesting as it shows the Hydro Copter in water-treading mode. The Hydro Copter is utilizes a battery-powered motor to turn the bubble and spin the rotors in land or water mode. It also came with a 90 degree joint to attach the motor to the bottom of the vehicle, thereby acting as an underwater propeller! Definitely goes down as one of the coolest bathtub toys ever!
Most Hydro Copters found these days suffer from a yellowed plastic dome or dried out rubber tread.