Feature:1. Adopted 2.4GHz remote control system, can be switched freely, front, back, left and right directions change, high sensitivity.2. The longest remote control distance is about 40m / 131.2ft, and the remote control button is simple, easy to operate and need 2 AAA batteries(not included).3. Streamline shaping, flexible mechanical tail joint, double propellers design, and strict sealing techniques. All functions ensure that the whale has enough strength to move freely.4. Builtin 3.7V 500mAh rechargeable lithium battery with USB charging cable, the whale can swim for 20 minutes with full charge.5. Can cultivate children's intelligence and handson ability, enhance parentchild relationship.Specification:Item Type: Remote Control Whale Material: PlasticType: Whale Suitable Age: 6 years old +Ability Raise: Emotion, sight, intelligence development, crawl, mind and hand, grasp, sense, hand-eye coordination, other abilities, interaction, hearing, parent-child communication and interest cultivationRemote Control: HandleRemote Control Battery: 2pcs 1.5V AA batteries (not included)Lithium battery: 902030, 3.7V, 500mAh(included).Package List:1 x Whale Head1 x Whale Tail 1 x Remote Control1 x USB Plug1 x Screwdriver2 x Propellers1 x Lithium Battery2 x Screws1 x English ManualNote:Children under the age of three do not play, do not eat the accessories, children should play under the supervision of parents.