Zenith Chronomaster Sport 160th Anniversary Edition 49.3102.3600/51.M3100. Zenith commemorates its 160th anniversary with the CHRONOMASTER Sport 160th Anniversary Edition, a striking showcase of the brand's legendary craftsmanship and innovative design in exclusive blue ceramic. This limited-edition timepiece features the high precision El Primero 3600 automatic movement, renowned for its ability to measure time to 1/10th of a second, making it a pinnacle of chronograph technology. The heart of the watch beats at an impressive frequency of 36,000 VpH (5 Hz), supporting a power reserve of 60 hours and a range of advanced chronograph functions. These include a central chronograph hand completing one rotation every ten seconds, alongside a 60-minute counter at 6 o'clock, and a 60-second counter at 3 o'clock. The practical date indication is neatly positioned at 4:30 o'clock. This model's aesthetic is defined by its 41mm blue ceramic case with a thickness of 13.6 mm and a lug-to-lug width of 47 mm, ensuring a robust yet elegant profile. The dial, in a captivating blue-tone sunray finish, features three distinct coloured counters that provide a vibrant contrast, all beneath a rhodium-plated, faceted hand and hour markers coated with SuperLuminova SLN C1 for optimal legibility. Durability meets style with this watch's water resistance up to 10 ATM, making it suitable for swimming and water sports. It comes with two interchangeable straps to suit any occasion: a sophisticated blue ceramic bracelet with a ceramic folding clasp for a seamless look, and a sporty blue rubber strap with a steel folding clasp for casual wear.