With its mini size, this submarine is very portable and convenient to carry away, suitable for indoor and outdoor activity. Besides, this boat is a intelligent toy, a perfect gift for children to improving their learning ability. Features:1. The submarine can move forward, backward, left, right. 2. Simulated design reflect the superior performance of a real submarine.3. Infrared signals are not disturbed. It is safer to play without power or water.4. Built-in rechargeable battery can be charged directly by remote controller, convenient to use.5. Intelligent toys is able to practice children'sintelligence quotient and exercise their manual ability. Specification:Item Type: Submarine ToyMaterial: Plastic, Metal, Electronic ComponentsFrequency: Black 27MHZ/ Green 40MHZBattery Capacity: 3.7v /100mah li-ionBattery Voltage: 3.7vBattery Charge Time: 15 minutesRemote Control Battery: 4 * 1.5 AA (Not Included)Color: Green, Black (Optional)Size: Approx. 15 * 6.8 * 4.5cm / 5.9 * 2.7 * 1.8in Weight: Approx. 266g / 9.38ozRemote Control Mode: left hand front and back, right hand left and rightRemote Control Distance: 5 meters when diving 60-70cmEndurance: 23-25 minutesChannel: 6Recommended Age: Above 8 Years OldPackage list:1 * Submarine Toy 1 * Remote Control1 * Instruction1 * Antenna .Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.