Challenge Tourbillon 8 5N Red Gold/5N Mvt E00105.3925001 SwissMade Framed by a black tachymeter Lug Width (Lug-Buckle):21-16 with visible balance wheel-RW1212 For elegant refinement with FC-716ONB3NH6B

Framed by a black tachymeter bezel

ETA/Unitas Calibre 6497/8 Swiss Mechanical Manually Wound Movement Features 17-Jewels and Incabloc Novodiac Shock Protection

the Series X Special Edition is a celebration of unparalleled accuracy

as well as a large gold GMT hand for instant visibility and is framed by a dramatic dual-tone green and black GMT bezel

while its silver dial is decorated with Roman numeral hour markers and a poetic moonphase function

Challenge Tourbillon 8 5N Red Gold 5N Mvt E00105.3925001 SwissMade Framed by a black tachymeter Lug Width (Lug Buckle):21 16 with visible balance wheel RW1212 For elegant refinement with FC 716ONB3NH6B Framed by a black tachymeter bezel ETA Unitas Calibre 6497 8 Swiss Mechanical Manually Wound Movement Features 17 Jewels and Incabloc Novodiac Shock Protection