U-Boat U-42 Chrono Gold Limited Edition

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Produced in a limited edition of 99 pieces, the U-42 Chrono Gold model successfully alliances titanium with precious gold. Its case, Bi-directional rotating bezel and caseback are crafted in Titanium; whereas the minute indicators on bezel, crown, chrono button, screws on the bezel and bezel release lever are made with 18 carat gold. The 12 o’clock ball indicator on the bezel is made of ceramic.

All engravings on this piece are carried out by mechanical pantograph. The resistance of this piece is tested in an autoclave at 40 atm before the final assembly is completed. The winding crown was built in two parts: one is attached to the movement stem whilst the other is hinged to it with a pivot. This gives a flexible joint configuration which allows the crown to protrude considerably from the watch itself for winding and setting, yet returning it to a protected, hidden position, diminishing the side clutter when in action. The water-tight crown protection attached to the stem is assured by a clipping gasket in energised Polytetrafluoroethylene and by an o-ring twin-arrangement.

Equipped with an automatic movement, this timepiece offers chronograph functions, and a date indication at 9 o’clock.

Technical details
Model: U-Boat U-42 Chrono Gold Limited Edition
Limited Edition 99 Units
Ref. 6473

Movement
Automatic mechanical chronograph modified and personalized at U-Boat specifications for date display and stem position at 9 o’clock
Frequency: 28.800 vibrations per hour, 4 Hz.
Power reserve: 48 hours
25 jewels
Height: 7 mm

Functions
Hours, minutes, small second
Chronograph 60 s, counter 30 min and 12 h
Date window at 9 o’clock

Case
In titanium, with subsequent treatment of IP Black coating
Diameter: 47 mm. Case thickness: 18,90 mm
Watertight on axis reset and assured charge by PTFE gasket
Bi-directional rotating bezel, in titanium, lockable with a lever on the right side of the case
Fixing of revolving bezel by 3 screws encapsulated in the back case
The bezel removal, for maintenance and washing obtained by removing the three screws, does not affect the watch watertight
12 o’clock ball indicator on the bezel made of ceramic, minutes indicators in gold 18 K
Crown, chrono button, screws on the bezel, bezel release lever in rose gold, 18 K
Gold total weight around 15,40 gr
Caseback in titanium, fixed on case with 6 encapsulated hexagon screws in steel
Crystal: sapphire glass.
Water resistance: 300 meters, 30 ATM.

Dial
Two superimposed dials, one in rose gold 18 K and one in matt black, laser cut.
Baton hands

Strap
Handmade and hand finished alligator black leather, square scale, tongue titanium buckle, tongue of the buckle in 18 K rose gold
Width: 23/23 mm. Fastened to the case with screws