Sinn Watch 903 ST. 903.040 Leather Possibly one of our favourite Sinn dress watches, this Sinn 903 ST watch has been manufactured in Germany with a stunning mix of stylish design tropes, an exquisite self winding mechanism and a luxurious leather strap. Having become famed for their fully equipped timepieces, the brand have enhanced this Sinn 903 ST watch hours, minutes and subsidiary seconds function, a date display at 4 o clock, chronograph function and an interior rotating bezel with logarithmic scale. The Sinn 903 ST watch continues to impress with the SW 500 self winding movement, a calibre with 25 bearing jewels, 28,800 semi-oscillations per hour and a seconds stop function. The dial is also impressive using a high quality black electroplated material and luminescent hands and appliques that have been meticulously attached by hand. Sapphire crystal glass with anti reflective treatment is used on the front and back of the watch enhancing protection and providing a stunning view into the automatic mechanism. This Sinn watch also comes with a 2 year warranty and a water resistant promise of 100 metres.