Sinn watch u2 ezm 5 bracelet this professional diving watch is designed to be virtually impervious to water penetration the case of the timepiece is made of german submarine steel that is resistant against high pressure and magnetic influences the movement is protected from shock and the influence of high and low temperatures a date window is positioned at the 3 o clock mark additional functionalities include captive divers bezel with minute ratcheting crown at 4 o clock a second time