Tudor Caliber T603

The Tudor caliber T603 is a Swiss made automatic movement found in Tudor Royal watches. This caliber is powers the larger 41mm Day/Date Royal models. Watches with this movement were announced in 2020. Some of the topics covered in this caliber listing: Tudor made by Sellita Is it an officially certified chronometer? When should the Day/Date change? Recommended Service Intervals Caliber T603 Warranty List of Tudor watches with caliber T603 Examples of watches with this movement The Tudor T603 is based on a Sellita caliber. You may see other sites incorrectly list the T603 as being based on a Sellita 2834. There is no such thing as a Sellita 2834. There is an ETA 2834-2 which the Sellita SW240-1 is a clone of. Therefore, it is safe to assume that the T603 is based on the Sellita caliber SW240-1, making it a clone of a clone. Interestingly, the Tudor documentation lists the T603 as having 25 jewels, however, the Sellita caliber SW240-1 actually contains 26 jewels (one extra jewels when compared to the ETA 2834-2, much like the difference between an SW200-1 and ETA 2824-2). Other discrepancies between Tudor and Sellita info include the diameter. Tudor lists a diameter of 33.3mm, whereas Sellita lists 29.4mm diameter (with a 29mm case fitting diameter). Also, thickness: Tudor says 5.5mm, Sellita says 5.05mm. If you want to dig deeper into the background of the T603, the SW240-1 is based on the SW200-1 with an additional outer day of the week complication. Learn more about the SW200-1 here. Although Tudor does not write “Chronometer” across the dial of the Royal, their official marketing says this about the movement inside: “Swiss self-winding mechanical calibre T603 with chronometer performance” “Swiss self-winding mechanical calibre T603 with chronometer performance” So does “chronometer performance” means is it an officially certified chronometer or not?

Specifications

Complications

Also Known As

Watches Using This Caliber

No watches linked to this caliber yet.

Related Tudor Calibers