the boats and the cars that are packaged similar are really nkok, an ok brand that makes some intresting stuff. i have a hummer/boat combo the hummer has the lowest ground clearance i have ever seen on a micro. the boats sits low in the water tho it is a whole lot funner than the hummer. both are dual celled, but don't really perform like it. I also have one of the tanks, slow but with the body off, it can climb anything, if it doesnt flip over, planning on making a roll bar soon. its a dual motor system but it has a normal controller. the forward button move the treads, the left/right buttons stop the motor to the tread to make it turn. also the rectangler box's (tanks, extened and the short cars)controller can contol zz's the charger charges my dual cell zz (getting it on the charger is a little diffcult but once you figure it out it pretty simple

i typed alot