Sinn watch 356 sa pilot iii fine link bracelet 356 sa pilot iii fine link bracelet at a classic 385mm in diameter the case boasts a fine satinised finish and exudes outstanding sophisticated functionality particularly noteworthy is not only the guilloche silver electroplated dial but also the highly curved sapphire crystal glass which is ground out and carefully polished using a complex process involving an approximately 5mm solid blank with five different curvature radii this not only