I’ve owned this watch for several years and it has seen very little, if any, wrist time. It comes complete with the original box and all accompanying literature and accessories. Unfortunately, it was missing the triangle, zero marker on the bezel when I purchased it and I never got around to replacing it.

It is in perfect running condition and is keeping excellent time, but please feel free to ask any questions you might have and I’ll get back to you as quickly as I can.

The Sinn 103 Collection is a family of pilot’s watches that are designed to be reminiscent of Sinn’s original cockpit timepieces. Sinn promises uncompromising functionality in this collection, even under the most demanding conditions. Each 103 pilot chronograph is expertly engineered to be the optimal tool for ease and safety in aviation. Sinn is known for high-quality movements and materials, and this collection is no exception with a variety of quality cases and movements to ensure the collection contains the perfect watch for every aviation or watch enthusiast.

Core Features of the 103 Collection:

The collection promises uncompromising functionality, even under the most demanding conditions.

The pilot chronograph design is one of Sinn tradition. The brand’s roots are firmly in aviation timepieces.

Each of the watches in the collection is water-resistant and pressure-resistant to 20 bar, meeting the technical requirements for waterproofness, as set out in standard DIN 8310. The watches are also resistant to low pressure.

Model Specifications 103.031 BRACELET:

This model features a matte black dial that is protected by shock-resistant acrylic glass.

This pilot’s chronograph has 3 sub dials and a pilot’s bezel with a luminous key mark.

A day and date aperture can be found at 3 o’clock.

The case of this watch is made of polished stainless steel.

The screw-fastened case back and screwable crown aid water-resistance.

This watch is powered by a Concepto C99001 self-winding mechanism. It uses 25 bearing jewels and 28,800 semi-oscillations per hour to power the watch. The movement features a seconds stop function and is anti-magnetic as per DIN 8309.

The watch has a 41mm case diameter, a 20mm band lug width, and a 15.5mm case thickness. It weighs 74 grams without a strap.

The numbers, indices and hour, minute, and second stopwatch hand are coated with luminescent colour.

This model is finished with a polished and satinized stainless steel, two link bracelet.