... and sound function 1)Henglong 3899A-1 rc tank 2)new design 3)BB shooting Item number: 24565Name: ... with smoke and sound function, rc battle tank, rc BB tank Specification:1. rc battle tank2. battery: NI-CD 2000mah ... sound,machine-gun sound,cannonball sound,emulational action effect.(2)smoke: realistic smoke function.(3)forward,reverse,left/ ... toy with smoke and sound function, rc battle tank, rc BB tank