44 mm model TAG Heuer Formula 1 x Senna Special Edition powered by the TAG Heuer Caliber 16 Automatic. This chronograph pays homage to the legendary Ayrton Senna, TAG Heuer ambassador since 1988, a time when the driver was unrivaled in Formula 1. This TAG Heuer Formula 1 features yellow and black, a tribute to the colors of Senna. The ceramic bezel features a special tachymeter scale that gives it a touch of modernity, to celebrate our collaboration with the Senna Foundation. The white Super-LumiNova® coating on the rhodium-plated hands and applied indexes guarantees maximum readability at any speed and in any lighting conditions. The black calfskin strap has a black interior with yellow Senna-style stitching and exclusive "S" embossing. The steel folding buckle has a double safety locking system with rider extension for wearing it over a racing suit.