OK, I have to be honest and admit it - I actually wondered what the heck you were talking about - duck? What duck? Naw, no duck.........To quote my wife, it is the duck button and must be for wet areas.
Seriously, look at it from a distance and you shall forever call it the duck button.
Off Road + is a Rubicon only thing - it's sure not on Overland - no such button.What’s the off road+?