Limited Edition Gorilla Watch Fastback GT Blue Demon Limited Edition. Continuing the next evolution of the GT collection, the Blue Demon gets its colorway inspiration from the livery of the rebellious, high-energy sponsor responsible for bringing excitement and competition back into single-seat, open-wheel racing. The Blue Demon’s distinctive deep blue polished ceramic bezel complements the contrasting red aluminum pinstripe and layered carbon case. The titanium/aluminum applied crown guards trickle down from the technical evolution first introduced in the Leon racing team Limited Edition.