F6S" adds the small second function to our standard Cal

and chronograph counters for 30 minutes and 12 hours

Frame Material: Transparent with Acetate

Dial: Blue mother of pearl

U-Boat Watch Automatic Watch Sommerso Diver Blue Champagne (Dial) F6S" adds the small secondInnovative Patented crown release system at 8 o'clock for easy time and date setting. U Boat U28 Swiss Made Automatic Movement with a Frequency of 28,800 vibrations per hour, 4 Hz. Power reserve of 38 hours 25 Jewels. The movement is modified and personalised to U BOAT specifications, with date display with cyclops and stem position at 9 oclock. 46mm x 16mm 316L Stainless Steel Case Distinctive crown on left side with patented screw down protection