Sinn Watch 1736 St I 4N. 1736.011 Leather Black Possibly one of our favourite Sinn dress watches, this Sinn 1736 St I 4N watch has been manufactured in Germany with a stunning mix of stylish design tropes, an exquisite self winding mechanism and a luxurious black calf leather strap. Having become famed for their many patented technologies, Sinn have enhanced this 1736 St I 4N watch with their Sinn D3 system. This unique technology allows the push piece pins and crown shafts to be mounted directly into the case creating the perfect seal, ensuring protection against lateral knocks, dust and moisture. The Sinn 1736St I 4N watch continues to impress with the self winding movement ETA 2892-A2, a calibre with 21 bearing jewels, 28,800 semi-oscillations per hour and a seconds stop function. The dial is also impressive using a silver electroplated material with sunburst decoration and gold plated hands and appliques that have been meticulously attached by hand, Sapphire crystal glass with anti reflective treatment is used on both the front and back of the case to protect and enhance the timepiece, also providing a mesmerizing view into the workings. The watch also comes with the standard 2 year warranty and a water resistant promise of 100 metres.