Achieve top performance
Sinn is known for its use of first-class, robust materials. The Sinn 903 St B E's case is made of polished stainless steel, while the cover glass is made of scratch-resistant sapphire crystal with an anti-reflective coating on both sides. The visible back is also made of sapphire crystal, giving you a clear view of the watch's fascinating interior. You can choose between leather or silicone for the bracelet of the sporty model with practical ratchet chronographs.
The clear navy blue dial is particularly elegant, contrasted by the ivory glow-in-the-dark colour. Perfect reading is guaranteed even in dark or foggy conditions.