This is a posable, high-grade injection-plastic kit of an item from the Gundam universe.
Giant fighting robots that can swim? Yes, indeed the new Zaku Mariner is an Amphibious Mobile Suit which means this huge piece of machinery is designed to get wet. The HGUC plastic model verison of this Gundam is molded in color and comes with foil stickers a wire accessory, and plenty of marking stickers!