When accuracy like no other is what you want, this Ulysse Nardin Marine Chronometer Manufacture gets the job done. Check the hours, minutes, seconds, date, and power reserve on its black dial. A rubber-titanium strap with deployment push button clasp complements its stainless steel case, which has a skeleton back. Its chronometer rating, automatic UN-118 caliber, 60-hour power reserve, and water resistance up to 100m promise unparalleled durability and precision. A screw down crown makes time adjustment simple.