Hello, @deong I am here to introduce a World amazing remote control high-speed racing boat its name is JJRC S1,
It has a strong water cooler system and it has 25Km per hour speed and It has a manual fine tuning.


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It has a replaceable battery and there is a system if the boat is a low condition the alarm starts and then we know what to do?

Structure of Boat

Remote Control

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It is availabe in three colour you can choice of your own.