U-Boat 40mm Stratos
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mechanical hand winding, personalized to U-BOAT specifications for stem to be positioned at 9 o’clock.
Frequency: 21,600 vibrations per hour. Power reserve: 42 hours. 17 jewels.
stainless steel AISI 316L, distinguishing patented crown on left side. Serial number plate fixed on the side of the case.Diameter 40 mm.
Bezel ring in polished tungsten. Thickness 9,50mm.
sealed with seven external screws, opening U-shaped sapphire fumé crystal with movement view.
three superimposed dials, the upper one in black with luminous beige hands and markers. Visible ruby.
sapphire crystal with anti-reflective coating.
100 mt, 10 ATM.
handmade and hand-finished dark brown alligator leather. Stainless steel tongue buckle. Width: 20/18 mm.