Introducing the Sinn 103 A Sa B

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The Series 103 Traditional Pilot Chronograph has been a mainstay in the Sinn collection for quite some time, and it has spawned a variety of variations from time to time. It is widely popular with collectors, thanks to its reliability and ruggedness. This time, the watchmaker is expanding its traditional 103 series by presenting the 103 A Sa B. 


The latest limited edition from Sinn Spezialuhren: the 103 A Sa B.

The latest limited edition from Sinn Spezialuhren: the 103 A Sa B.

For collectors who are familiar with Sinn watches, the 103 A Sa B is certainly a breath of fresh air. One of the highlights of this watch is certainly its refreshing electric blue color scheme. In terms of aesthetics, it is certainly much more exciting and outstanding as compared to the original black variants.

Several changes to the watch includes the dial, bezel, as well as the strap. The Sinn 103 A Sa B, firstly, comes with a stunning blue electroplated sunburst dial and silver electroplated counters. We like how the sunburst effect gives the watch a different sort of feel, especially when it is worn outdoors or under a light source. Next, the bezel now features the same electric blue color to compliment with the dial of the watch. Finally, it is paired with a nice blue cowhide leather strap with alligator embossing. Interestingly, the watch also comes with a grey textile strap. The latter is certainly useful, especially if one plans to wear the Sinn 103 A Sa B to partake in some activities outdoors.

The transparent back of the Sinn 103 A Sa B, featuring the ubiquitous Valjoux 7750 movement.

The transparent back of the Sinn 103 A Sa B, featuring the ubiquitous Valjoux 7750 movement.

The watch is powered by the ever-reliable Valjoux 7750, a self-winding movement that features the chronograph function, as well as a date and day indicator. Additionally, the movement is able to withstand both shock and magnetism, as per the DIN 8308 and DIN 8309 standards. This is an extremely well-built and utilitarian movement, and it is certainly a workhorse which is capable of performing under many tough conditions.

There are several other features on this watch as well, which includes the Ar-Dehumidifying Technology (which prevents fogging and increase functional reliability), a luminous triangle marker on the “0/60” position of the bezel (to increase functionality and increase legibility in the dark), as well as a pressure-resistant case of up to 20 bar.

The Sinn 103 A Sa B comes with a special case, in which it includes an additional grey textile strap.

The Sinn 103 A Sa B, in which it includes an additional grey textile strap.

This 41mm Stainless Steel timepiece is limited to 500 pieces, and each of them is individually numbered on the rotor of the watch itself. In our opinion, this timepiece is definitely worth a look, if one is eyeing for a chronograph that offers an excellent value proposition. For more information on this timepiece, please do check out their website or from an authorized dealer near you.


Technical Specifications

Mechanical Movement

-Valjoux 7750
-Self-winding mechanism
-25 bearing jewels
-28,800 semi-oscillations per hour
-Seconds stop function
-Shock resistant as per DIN 8308
-Anti-magnetic as per DIN 8309


-Case made of stainless steel, polished
-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
-Crown screwable
-Push-pieces screwable
-Meet the technical requirements for waterproofness, as set out in standard DIN 8310
-Pressure-resistant up to 20 bar
-Low pressure resistant


-Hours, minutes, subsidiary seconds
-Date display
-Day of the week display
-Pilot’s bezel with minute ratcheting and luminous key mark

SINN Technologies

-Ar-Dehumidifying Technology for enhanced freedom from fogging
-Captive bezel

Dimensions and Weight

-Case diameter: 41 mm
-Band lug width: 20 mm
-Case thickness: 17 mm
-Weight without strap: 88 gramme

Dial and Hands

-Blue electroplated dial with silver electroplated counters, UV resistant
-Indices coated with luminescent colour
-Hour, minute and stopwatch second hand coated with luminescent colour


-3 years


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