Poor Signal Alarm: The transmitter of the rc boat will issue alarm sound for you to make a return voyage or stop the boat on time while the signal becomes poor. Weight: About 1400g, with box. Battery: 1500mAh 3S Lithium battery(included). Using Time: about 8-10 minutes.1 x Rc Boat(included the boat battery). This item is in the category "Toys & Hobbies\Radio Control & Control Line\RC Model Vehicles & Kits\Boats & Watercraft". The seller is "smellsuble" and is located in this country: CN. This item can be shipped worldwide.