Made from highly simulated ABS material, it has high-strength waterproof performance, can swim and spin freely in the water like a real shark. Its structure design effectively reduces its weight & power consumption.NOTE - When the RC shark is NOT in the water, it will turn off! It must be in water to start work? ? ? ? Fine workmanship looks like a real shark, it adopts a streamlined bullet-shaped design to reduce resistance.2.4Ghz Remote Control Frequency, this remote control fish toy is suitable for many people to compete with each other without interference. Remote control distance is about 30-40 meters. The tail swings frome side to side as the shark swims.3.7V 300 mAh Lipo battery and USB charging cable. Easy to charge. This Simulation Shark RC Boat can fly about 20 minutes by each battery. Just enjoy constant fun indoor or outdoor with this boat.Practical in use, this water shark toy can swim freely in the water tank, bathtub, swimming pool, pond or sea. It features the realistic movement. Great as a gift for children to bring a lot of fun.