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U-Boat Doppiotempo Automatic Chrono Black Silver
U-Boat Doppiotempo Automatic Chrono Black Silver
U-Boat Doppiotempo Automatic Chrono Black Silver
U-Boat Doppiotempo Automatic Chrono Black Silver
U-Boat Doppiotempo Automatic Chrono Black Silver

U-Boat Doppiotempo Automatic Chrono Black Silver

$3,825.99 USD Regular price $4,250.00 USD Sale price

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Doppiotempo, the latest creation by Italo Fontana, is characterized by an innovative system that allows two different times to be read simultaneously, with chrono functions. The watch has a rotating bezel lockable through a lever on the right side of the case.

Swiss mechanics, automatic chronograph modified to U-BOAT specifications. Skeletonized rotor.
Frequency 28,800 alternations / hour. 48-hour power reserve. 25 rubies.

hours, minutes, seconds, chronograph, date, 24h indicator, bidirectional ring with references for the second time, crown extraction lever.

CASE: satin steel AISI 316L distinctive position of the patented crown protection on the left.
Plate fixed on the side of the case with serial number engraving. Diameter 46 mm.
Lever placed on the right side of the case to lock the ring nut.

closed with 7 screws, U-shaped opening with smoked sapphire glass movement view.

black, on three levels. White numbers and indexes, with brushed metal glasses plus superluminova treatment.
White spheres, with superluminova treatment.

very high quality sapphire, anti-reflective coating.

100 mt, 10 ATM.

in leather, black with water resistant lining, steel barb closure.
Width: 22/22 mm. will cover the cost for Standard International Mail* (orders over $249+) and USPS Domestic First Class (orders over $99+). Not all countries are eligible for free international shipping. Upgraded shipping options (estimated transit times and rates) will be quoted during checkout. has been shipping worldwide since 1999 and we ship internationally daily! All orders are processed and shipped out by 5pm (PST) Monday through Friday on regular business days. Orders placed/received after 12:00pm (PST) will be processed the next business day. 

We could all use some extra time. If your new, unworn item is not 100% to your satisfaction, you have 30 days from the original ship date to return it. To be eligible for a return, your item must be unused, unworn and in the same condition that you received it. It must also be in the original packaging. More details can be found on our Returns page.  Unfortunately SISU and Klokers watches sales are final and not eligible for return.

Warranty periods range from 12 months to lifetime, depending on the brand. All of the brands we carry come with their international manufacturer warranty.* All warranty issues are to be handled directly with the watch manufacturer, so be sure to keep your electronic invoice for proof of purchase from as we're an authorized retailer. Contact the brand directly using the information in your warranty booklet or the manufacturer's website for complete warranty terms and repair instructions. Typically the manufacturer's warranty does not cover: battery, crystal, strap or bracelet; damage resulting from improper handling, lack of care, accidents or normal wear and tear; damage from contact with objects; water damage. 

*Unfortunately SISU and Klokers watches do not come with an international warranty as they are no longer in business.  All sales are final on SISU and Klokers with no returns accepted.
U-Boat Doppiotempo Automatic Chrono Black Silver angled shot picture