On Holden’s list, Probably Want At Some Point
Sinn 103 St Sa
The Sinn 103 St Sa (103.061) is a chronograph from Sinn: a 41 mm stainless steel case, 17.37 mm thick and 47.87 mm lug to lug, with an automatic ETA/Valjoux 7750 movement and 200 m water resistance.
Going by its 47.87 mm lug to lug, it should sit within the flat top of a wrist of about 6.5 inches (16.5 cm) or larger.
The research has no sourced US price for it.
Specifications
From the research, with the sources for each group of facts. Unknown means no source confirmed it.
| The watch [1][2][3] | |
|---|---|
| Brand | Sinn |
| Reference | 103.061 |
| Category | Chronograph |
| Production | Current |
| Case and size [1][2] | |
| Case diameter | 41 mm |
| Lug to lug | 47.87 mm |
| Thickness | 17.37 mm |
| Lug width | 20 mm |
| Case material | Stainless steel, polished (St Sa version) |
| Crystal | Sapphire front (domed) and sapphire display caseback on the Sa; acrylic on the sibling 103 St |
| Water resistance | 200 m (20 bar) per the acrylic-sibling review [2]; official page inaccessible for confirmation on the Sa |
| Weight | 180 g |
| Movement [1][2] | |
| Movement | ETA/Valjoux 7750, automatic |
| Power reserve | Approx. 48 hours [1] |
| Accuracy | Unknown |
| Bracelet [1][2] | |
| Bracelet or strap | Leather strap or solid steel bracelet options |
| Clasp | Unknown |
| Price and warranty (US) [1][2][3] | |
| List price (US) | Unknown |
| Street price (US) | Unknown |
| Used price (US) | Unknown |
| Warranty | Unknown |
Will it fit?
A watch wears comfortably when its lugs stay on the flat top of the wrist. Here is the 47.87 mm lug to lug against the flat top estimated for common wrist sizes.
| Wrist | Flat top | Fit |
|---|---|---|
| 6 in 15.2 cm | 47 mm | Likely overhangs |
| 6.5 in 16.5 cm | 51 mm | Comfortable |
| 7 in 17.8 cm | 55 mm | Comfortable |
| 7.5 in 19.1 cm | 59 mm | Comfortable |
| 8 in 20.3 cm | 63 mm | Comfortable |
Check it against your own wrist An estimate, not a guarantee; how the method works is on the tool page.
What the research found
These are the research’s judgments, scored against Holden’s priorities, not his own words.
Strengths
- Honest German tool chronograph with decades of continuous identity
- Ubiquitous, eternally serviceable 7750
- 200 m-class WR unusual for a pilot chronograph
- Excellent lume; sapphire front and display back on the Sa
Weaknesses
- ~17.4 mm measured height and ~180 g on bracelet
- Undecorated workhorse movement in view through the display back
- Official spec confirmation unavailable this session (Sinn and WatchBuys both blocked)
- Polished St Sa case divides opinion versus the classic bead-blasted tool look
Research scores, 0 to 10
| Execution and feel in the hand | 6.5 |
|---|---|
| Design identity | 7.0 |
| Value at a realistic price | 7.0 |
| Long-term ownership | 7.5 |
| Movement and engineering | 5.5 |
| Wearability and proportions | 3.0 |
| Versatility and durability | 6.0 |
| Fit with Holden's collection | 2.8 |
Also on Holden’s list
Other chronograph watches on his list.
- Parmigiani Fleurier Chronographe Mystérieux PFC908-1020001-100182
- Seiko Speedtimer Solar Chronograph SSC961
- Nezumi Studios Corbeau 702 / DLC CQ4.702
- Furlan Marri Nero Sabbia 1072-A
- Nezumi Studios Voiture VM2 Automatic Chronograph VM2.1102
Sources
- Sinn 103 St Sa: review, live pics and price thewatchobserver.com · read August 26, 2026
- Sinn 103 St Acrylic review thetimebum.com · read August 26, 2026
- Sinn 103 St Sa — official model page (fetch attempted) sinn.de · read August 26, 2026
Personal research, not a source of truth. Spotted an error? Email a correction.