U-BOAT U-42 Ref. 6947 B & B - 53 LIMITED EDITION OF 300 UNITS

Case, back case, bezel in titanium, with subsequent treatment of IP Black coating. Sapphire glass. Two superimposed dials, one in bronze and one in black. Bronze colored hands. 
Diameter: 53 mm.
Water resistance: 300 mt.

MOVEMENT: 
automatic mechanical modified and personalized at U-Boat specifications with stem position at 9 o'clock. Frequency: 28.800 vibrations per hour, 
4 Hz. 
Power reserve: 40 hours. 
25 jewels. 
Height: 4,60 mm.

CASE: 

back case fixed on case with 6 encapsulated hexagon screws. Bidirectional rotating bezel lockable with a lever on the right side of the case. 
12 o'clock ball indicator on the bezel made of ceramic. 
Bronzed parts: crown, pin of the hook, screws on the bezel, bezel release lever, limited serial numbering case plate.

STRAP: 
hand made and hand finished calf dark brown leather, tongue titanium buckle, tongue of the buckle in bronze.
Width: 23/23 mm. 
Fastened to the case with screws. 
All engravings on this piece are carried