A 44mm TAG Heuer Formula 1 x Senna Special Edition powered by a TAG Heuer Calibre 16 Automatic. This chronograph pays tribute to the legend of Ayrton Senna, TAG Heuer ambassador since 1988, when his domination of motorsport was unrivalled. This TAG Heuer Formula 1 adorns the yellow and black, to pay tribune to Senna\'s color. The Ceramic bezel uses a dedicated and exclusive tachymeter scale, for a modern setting, to celebrate our partnership with the Senna Foundation. White Super-Lumi Nova® treatment on the rhodium-plated applied indexes and hands ensure full legibility at all speeds and lighting conditions. The black calfskin strap has a black lining lined with Senna yellow stitching and an exclusive embossed \"S\" pattern. The steel folding clasp has a double safety system and a pilot extension for wearing over a driving suit. Case Size44mm Thickness15mm Lugs Distance21. 5mm Water Resistance200 Metres Case Material Steel Fine-Brushed/Polished Bezel Fixed Bezel Ceramic Crown Steel Caseback Steel Band Material Leather Buckle Folding Clasp - Polished Steel Caliber Calibre 16 Automatic Power Reserve42 Hours Balance Frequency28\'800 (4 Hz) Functions Hours, Minutes, Seconds, Chronograph: 1/4 Second, 30 Minutes Counter, 12 Hours Counter, Date