Frederique Constant FC-303LGD3BD6 Classic Diamond 36mm watch box it features sapphire glass and

it features sapphire glass and a screw-down crown

Stopwatch and Alarms: stopwatch and multiple alarm functions for practical timing

It features a date display

The U-Boat Sommerso DLC continues this approach with a round 46 mm stainless steel case and a black dial

Frederique Constant FC-303LGD3BD6 Classic Diamond 36mm watch box it features sapphire glass andGeneva based Frederique Constant is known for its classic proportions and the distinctive Heart Beat aperture in the dial. This version features a round 36 mm stainless steel case with a white dial. The movement is an automatic Frederique Constant movement (calibre FC 303), providing a power reserve of 38 hours and 26 jewels. While a quartz watch requires a battery, this model is simply kept running by wearing it. It also features a date display.