The car has a CVT gearbox, basically it doesnt have any gears. But Honda kinda wanted the customer think that there are 7 virtual gears, so its not weird (eventhough the car doesnt treat the gearbox as 7 speed during the normal driving)
We have same type of gearbox in our Mk3 and i use it as others said already, for overtaking. You click down few gears, bringing the revs up so the car can overtake better.
And also engine braking is an option