- Case made of stainless steel, polished / satinized
- Column wheel chronograph, exquisitley decorated
- Sapphire crystal glass
- Transparent case back made of sapphire crystal glass
- Dark blue dial and luminous ivory coating
- Interior bezel with logarithmic scale and slide rule function
- Waterproof and pressure-resistant to 10 bar
- Low pressure resistant
Shipping costs, taxes and customs duties
New watch deliveries are free of shipping costs within Germany. For delivery to European Union (EU) Member States, we charge EUR 80.00 and for deliveries to all other countries we charge EUR 120.00 shipping costs. For bracelets and accessories we charge EUR 6.50 within Germany, EUR 30.00 to European Union (EU) Member States and EUR 50.00 to all other countries.
Shipping costs for service and spare parts can be found in the service price list.
For deliveries within the European Union (EU), the VAT rate of the supplier country is charged. Deliveries outside the EU are shipped VAT-free.
For deliveries outside the EU, additional customs duties and fees may apply. Please check the relevant customs regulations with the respective customs authorities.
![](https://www.sinn.de/out/pictures/generated/product/11/640_360_100/sinn_903-st-b-e_k.jpg)
Technical details
Self-winding mechanism
28 bearing jewels
28,800 semi-oscillations per hour
Seconds stop function
Anti-magnetic as per DIN 8309
The information on the mechanical movement corresponds to the current production situation in Frankfurt am Main. Due to technical changes, it may happen in individual cases that stock items of our sales partners deviate from this information.
Sapphire crystal glass in front, anti-reflective on both sides
Transparent case back made of sapphire crystal glass, anti-reflective on the interior
Case back screw-fastened
Winding crown screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Waterproof and pressure-resistant to 10 bar
Low pressure resistant
Date display
Chronograph
Interior rotating bezel with logarithmic scale (slide-rule function)
Band lug width: 22 mm
Case thickness: 14,5 mm
Weight without strap: 88 gramme
Counters and interior bezel electroplated in silver
Number “12” and indices coated with luminescent colour
Hour and minute hand coated with luminescent colour