Question about Revlon One Step Volumiser

[cupoftea2022]

Looking for some help please. My daughter as hinted she wants a Revlon volume styling brush and I assume that she's asking for is one of the Revlon One Step volumiser that I’ve seen on Amazon.

Please can someone explain to me the difference between the:

Revlon one step volumizer

Revlon one step volumizer plus

Revlon one step volumizer titanium (is this just a colour difference?).

I did try and find the answer to this before posting this but could not find anything. Thanks.

I have the titanium one and the difference is that it has a titanium coating so dries the hair quicker. I use a normal dryer to dry my hair to say 95% and then finish off with the Revlon.
I think the other two are just different in sizes.
I did have a Dyson airwrap that I only used with the brushes too much a faff for the curls and I sold it and replaced with the Revlon :)