Just the colours. It looks like the Tete de Vipere but with a "standard" movement and more blue on the dial
https://www.calibre11.com/new-for-2018-carrera-heuer-02-tourbillon-tête-de-vipere/
Really love this one and got to see it and touch it in the boutique when they had a watchmakers' evening.
It’s look like Japan limited edition.
Ref.CAR5A8H.FC6448