Sinn watch u200 ezm 8 bracelet the u200 diving watch comes with a smaller case and all of the functionalities that larger diving watches have the case is made of german submarine steel which has anti magnetic properties pressure resistance temperature resistance and exceptional water resistance in addition sinns special dehumidifying capsule has been added the watch is equipped with a number of functionalities including captive divers bezel with minute ratcheting crown at 4 o clock