eMart Mini Remote Control Toy Electric RC Fish Boat Shark Swim in Water for Kids Gift - Black The Fish Could Swim in Water Freely with Instructions from the Controller, Great for Gift Comes with Built-in Battery & USB Charger Cable, Easy for Charging The Plastic Tail Could Swing Lively, Just Like a Real Fish Swim in the Ocean Freely Charging Time: 20 Minutes; Remote Control Distance: 2-5 m; Product size: 10.6 x 4.5 x 5.7 cm Controller Battery: 4 x AA Battery (Not Included)