The RC fish simulates a real shark. It has movable joints that can show different routes of activity in the water, swimming faster and more flexible. The RC fish simulates a real shark. It has movable joints that can show different routes of activity in the water, swimming faster and more flexible. Active Joints - The different angles of the joints and protrusions of the sharks body will show different paths of movement in the water to stimulate childrens curiosity Lightweight and waterproof: with high strength waterproof performance, can swim and spin freely in the water. It has realistic movements. It can swing smoothly like a real fish Suitable for a variety of scenarios, such as swimming pools, bathtubs, water parks, rivers, etc.WHAT'S INCLUDED 1 remote controlled shark, one remote, batteries are included Imported Requires: 2 AAA batteries, included Model no.