Technically speaking, the Sinn 903 is not a dupe of or homage to the Breitling Navitimer, but a legally produced execution of the original design.
When Breitling was hit by the Quartz Crisis in the late 1970s, it was forced to sell off some assets to stay afloat. German watchmaker Sinn seized the opportunity to buy the Navitimer design and reproduced it as the 903.
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As a far more pragmatic tool watch brand, Sinn’s version of the iconic slide rule bezel navigation chronograph eschews the intricate flair and precious metals found on Breitling’s Navitimer. It also lacks the markup baked into luxury watches, resulting in a significantly more approachable price.
That’s not to say the 903 is any less impressive or beautiful than most Navitimer references, just that it satisfies different priorities. For example, Sinn uses a La Joux-Perret movement, as opposed to Breitling’s in-house Caliber B01. But the 903 offers 200m water resistance, sinking the Navitimer’s 30m rating.






