You see, a water toy is a kind of biological reaction fish, a waterproof part of the body. A part of the body comprises a battery connected to at least one coil by a controller. The relation between coil and magnet, the coil can oscillate on VI.If you are already registered, please log in first. The oscillation of the coil will lead to the movement of the fluid fin, which is combined with the water body, making the fish move forward to the travex of the water body.
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