1. Battery charging time: 15 minutes 2. Remote control battery: 4*1.5 AA (sold separately) 3. Charging plug type: USB cable charging 4. Material: plastic, metal, electronic components 5. Remote control distance: the remote control distance is 5 meters when submerged 60-70CM underwater 6. Life time: 23-25 minutes 7. Battery charging time: 15 minutes 8. It can move forward, backward, turn left, turn right, ascend, descend, rotate 360 degrees, just like a real submarine. 9. The infrared signal is not interfered. It is safer to play without water and electricity 10. Three motors have been installed to control static diving, propeller and rudder systems respectively 11. The static diving system enables the submarine to float and dive to a depth of 0.5 meters 12. Mini rudder system, can make the submarine rotate 360 degrees clockwise or counterclockwise 13. With remote waterproof transmitter 14. Can exercise childrens intelligence and physical coordination 15. Packing list: remote control submarine*1, remote control*1, manual*1, charging cable*1 16. Size: 15x6.8x4.5cm