Sinn Watches - 903 St B E – the Navigation Chronograph with dark blue dial. Worn with brown horsehide strap (contrasting seam white) on a 7.3" wrist, the 903 St B E
![Sinn 903 St B E Navigation Chronograph Alligator Embossed Leather Strap 903.045 BROWN LEATHER - First Class Watches™ Sinn 903 St B E Navigation Chronograph Alligator Embossed Leather Strap 903.045 BROWN LEATHER - First Class Watches™](https://www.firstclasswatches.co.uk/thumbnails/images/products/product42169-0-5362_cropped.jpg.thumb_FFFCFA_609x1000.jpg)
Sinn 903 St B E Navigation Chronograph Alligator Embossed Leather Strap 903.045 BROWN LEATHER - First Class Watches™
Sinn Watches - 903 St– the Navigation Chronograph. Worn with solid bracelet on a 7.3" wrist, the 903 St with 41 mm case measures 48.2 mm from lug to lug (12-6 o'clock).
![Sinn 903 St B E Instrument Chronographs Navigation Dark Blue Dial Steel Bracelet 41mm Watch | Sinn | Watches of Mayfair Watches of Mayfair Sinn 903 St B E Instrument Chronographs Navigation Dark Blue Dial Steel Bracelet 41mm Watch | Sinn | Watches of Mayfair Watches of Mayfair](https://watchesofmayfair.com/media/catalog/product/cache/789a43c4e9a5a1e754ee1289235666c4/s/i/sinn-903-st-b-e-instrument-chronographs-navigation-dark-blue-dial-steel-bracelet-903-045-x75_image-03_1.png)
Sinn 903 St B E Instrument Chronographs Navigation Dark Blue Dial Steel Bracelet 41mm Watch | Sinn | Watches of Mayfair Watches of Mayfair
![Sinn 903 St Instrument Chronographs Automatik Edelstahl... for £1,963 for sale from a Trusted Seller on Chrono24 Sinn 903 St Instrument Chronographs Automatik Edelstahl... for £1,963 for sale from a Trusted Seller on Chrono24](https://cdn2.chrono24.com/images/uhren/27288902-m7ucndr1u1g52iar50xasf0m-ExtraLarge.jpg)