U-Boat 8400. 1938 DOPPIOTEMPO. 43mm Ref 8400. Full set. Limited Edition. 2020

Basic Info

Additional information


Greetings.  Thanks for looking at this watch. We are a 5-star seller on both Chrono24 and Trustpilot with hundreds of watches sold and delivered around the world.


Presenting a mighty U-Boat 8400. 1938 DOPPIOTEMPO. Ref 8400. This is a 43mm watch complete with box and papers/card.

The Limited Edition watch is from 2020 and is No 49.

It has 100m water resistance.



Brand: U-Boat


Reference: 8400

Name: U-Boat Men’s 8400 1938 DOPPIOTEMPO LIMITED 200PCS



Swiss automatic mechanical, personalized to U-BOAT specifications. Skeletonized rotor.

Frequency: 28,800 vibrations per hour. Power reserve: 38 hours. 25 Jewels.


hours, minutes, seconds, date, 24h indicator, bidirectional inner bezel, with hours and 30-minute intervals that synchronize with the additional hand so as to display the two different time zones.


stainless steel AISI 316L, satin hand finish, double crown on the left side, one for the time and date adjustment, the other for the second time setting.

Diameter 43 mm.


sealed with 8 external screws, in bronzed sapphire glass showing the movement.


black, two superimposed dials, with rotating inner bezel. Numbers, hands and markers beige treated with superluminova.


ultra curved bronzed sapphire, high quality, with anti-reflective treatment.


100 mt, 10 ATM.


green calf leather, with steel tongue buckle.

Width: 22/20 mm.

Strap: ref. 8478/Z Buckle: ref. 5466/SCREW


Quick message from the seller. 


“We believe a watch is far more than just a simple teller of time. It is a real-life companion that will emote feelings of happiness and joy through your life journey.

It is a mechanical life form that has spirit and personality and will inspire, motivate and generate positive energy from within. 

If one day gifted to that special ‘someone’, a treasured watch will pass sentiment and meaning to the hands of others like few other gifts can achieve”


Our mission here is to spread ‘Watch Happiness’ around the world and promote the feelings of joy that come with buying a new watch.




🤗 Relax and buy with confidence. We are a 5-star professional seller on Chrono24 and TRUSTPILOT.


💥💥 Please note, all watches are sent DDU via DHL. It is a fast and fully trackable service.  DDU = Delivery with Duty Unpaid. This means the importer / receiver of the watch is responsible to pay any Sales Tax or duties to customs or the courier company to release the goods from customs. This applies to deliveries outside of the UK. As I am based in the UK, this does not apply to UK deliveries 💥💥


📦 🌎 We ship our watches all around the world on an express, door to door delivery service that is fully trackable. Delivery in 1-3 days depending on your location.


🕵️‍♂️  Authentic: All watches are authenticated.

🙏 Thanks again for looking. Please get in touch with any questions.  I would love to hear from you.

Please note, we do not accept returns from international buyers unless damage in transit


Marcelo – Prestige Watches UK


You May Also Like