Sinn U1 homages
One homage of the Sinn U1, drawn to scale beside it with price, movement and size.
44 mm across1 homage
See the homage
How to recognise one
Six marks make the look. The count says whether the one homage keeps each one.
Notched steel dive bezel
A broad steel bezel with a triangle at 12, a minute scale and numerals every five minutes.
Red seconds hand
A red seconds hand with a square lumed tip sweeps over the black dial.
Square and block markers
Square lumed blocks mark most hours, with a tall bar at 12.
Date at 3
A small white-on-black date window sits at 3.
Red U1 print
The U1 name and AUTOMATIK text are printed in red below the centre.
Solid link bracelet
A grey bracelet of large, solid rounded links.
Each close-up covers about 12.5 mm of watch, using the listed case width and estimated photo edges.
The one homage
The only homage of the Sinn on Bewrist so far.
Steelflier SF752
about £134 $179, seen 2 Oct45 mm
Lowest price. The lowest price listed here.
Original specifications
Sizes and specifications apply to the version named below. Other versions can differ.
U1 (1010.010)Shown in the photograph
Current Sinn U1 candidate; U1 versions share a core case but differ by dial/material/bracelet.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 44 mm | Sinn U1 1010.010 (Pre-owned) - SeriousWatches.com One cited source. SeriousWatches exact 1010.010 body lists Width (without crown): 44 mm. |
| Lug to lug | 50.5 mm | Sinn U1 1010.010 (Pre-owned) - SeriousWatches.com One cited source. SeriousWatches exact 1010.010 body lists Lug to lug: 50.5 mm. |
| Thickness | 14.7 mm | Sinn U1 1010.010 (Pre-owned) - SeriousWatches.com One cited source. SeriousWatches exact 1010.010 body lists Thickness: 14.7 mm. |
| Lug width | 22 mm | Sinn U1 1010.010 (Pre-owned) - SeriousWatches.com One cited source. SeriousWatches exact 1010.010 body lists Lugs: 22 mm. |
Sources and unconfirmed details
- Official page located; no successful saved full-body extract in this pass.
- u1.html, read 2026-10-07T07:55:00Z
- Sinn U1 1010.010 (Pre-owned) - SeriousWatches.com, read 2026-10-07T09:30:00Z
More about the U1
Lay a homage over the SinnAny of the 1, laid over the original at one scale
Lay the Steelflier SF752 over the Sinn
Slide to fade from one watch to the other and compare the case shapes. The figures below describe the version shown in the photograph.
44Sinn U1
45Steelflier SF752Photos use listed case widths and automatic case-edge readings. The readings have not been manually audited. Photo proportions stay unchanged. Perspective and lug length can differ.
Sinn U1 photo: U1 (1010.010). Steelflier SF752 photo: black · steel · red.
U1 (1010.010), specifications and sources
| Measure | Sinn | Steelflier SF752 |
|---|---|---|
| Case width | 44 mm | 45 mm |
| Lug to lug | 50.5 mm | 52.5 mm |
| Thickness | 14.7 mm | 15.2 mm |
| Lug width | 22 mm | 22 mm |
| Movement | Not listed yet | Japan NH35 |
| Power reserve | Not listed yet | Not listed yet |
| Water | Not listed yet | 200 m |
| Price | Not tracked here | about £134 $179, seen 2 Oct |
Side view
Copies
Not compared yet
Gives it away
- 45 mm case, larger than the Sinn U1
- Steel is 316L, where the U1 uses submarine steel with Tegiment hardening
No difference noted