Update on July 24, 2024.

Rectanglar Watch Sizes

Brand	Model	Length	Width	Thickness	Band
Cartier	Must Small	29.5	22	6.6	16
Cartier	Must Large	33.7	25.5	6.6	19
Raymond Weil	5767/2	30	23	6	18
Raymond Weil	5768/2	34	25	6	20
Seiko	SWR049	38.5	28.5	6	23
Herbelin	17468AP22GD	32.5	26.5	6.3	21
Herbelin	17478AP22GD	24.4	20.3	6.15	16
Casio	LTP-165	34.5	24.5	8.3	?
Casio	LTP-V007	31	22	7.5	14
Rotary	GS05280/70	40	28.5	7	?
Bulova	96B107	41	29	6	22
Sanda	1108	35	28	7.5	20
Sanda Ladies	9031	31	24	6.3	18
Sanda Ladies	1116	34.2	22	8.5	16
Accurist Ladies	L52004711	34	26	?	19
Dolce Vita Ladies	L5.512.4.71.4	37	23	7.2	?
Dolce Vita Ladies	L52554717	32	20.8	7.2	?
Dolce Vita Mini	L52004711	29	22	7.2	?
Pierre Lucerne	1888 tank	35	25	?	?
Herbelin Ladies	17478AP22GD	24.4	20.3	6.2	16
Seiko Ladies	SWR053	28.4	19	5	14

The average wrist aize for a man is 6.85 inches (17.4 cm). My wrist size is 170 mm (6.7").

Unfortunately many watch manufactures just give the width or diameter of retangular watches, and they do no specify its length. How a watch will fit on your wrist is determined by both its width and length. According to the specifications in the table, the Herbelin is shorter in the length than Cartier Must Large. However, the video in reference [1] shows that just the opposite is true. I believe that is because, some manufactures use the maximum value of the length and other use the pin-to-pin value. Unfortunately many watch manufactures just give the width or diameter of retangular watches and do no specify its length.

Try it on Application:

1. Herbelin Men's - 17468/22GO
2. Herbelin Ladies - 17478/22GO
3. Herbelin Comparison Photo

Sandia 9301 Videos with Measurements

1. Sanda 9301 - 30.5 x 24 x 6.3 mm - lug width 17.3 mm - Also 1108 and Seiko Ladies
2. Sanda 9301 - 30.3 x 24.2 x 6.1 mm - 17.8 mm - Indents that held the spring bar were not aligned!
3. Sanda 1108 - 34.2 x 27.6 x 7.5 mm - lug width 20.

I ordered 3 Sanda 9031 watches via AliExpress. The lug width on all 3 watches was 17.9 mm.

References:

1. Youtube: Sanda 9031, The Smaller Cartier Tank Homage
2. Article: Sanda 9031, The Smaller Cartier Tank Homage
3. The Cabachon fell off my Sanda Tank Homage
4. Theo and Harris: How To Wear A Cartier Tank: 3 WAYS
5. Size Comparison Hereblin Art Deco vs. Cartier Tank Large.
6. Size Comparison: Sekio Ladies - Sanda 9031 - Sanda 1108
7. Cartier Tank Alterative - Vintage Hamilton Gibert Watch in Solid Gold
8. Killing Time with Norman - Dress Watches 4 - Herbelin Watches
9. Kiling Time with Size Norman - My Favorite Watch Straps - Were to Buy Them.
10. Kiling Time with Size Norman - How to Micro-Adjust a Watch Strap - With Just an Extra Buckle .
11. Watch Strap Buckles - buckleguy.com.

Watch Straps

Historical, watch straps are even numbers. Odd number watch straps are harder to find. Some of the best leather comes from Italy. I have yet to find an Italian strap manufacturer that sells 17 mm watch staps.

Look for watch strops with quick release buttons.

A Vietnamese watch strap manufacture that sells high quality straps on Amazon is Vinacreation [1]. However, they too do not make odd number straps.

Two other Vietnamse watch strap manfuacturer on Etsy are Tuns and DNeather.

Tuns

You can order from Tuns directly: tunsstore.com..

• The Flat strap ( Slim ) will have a thickness of 2.8-3.0mm at the LUGS and gradually thinner towards the tail of the strap 2.3-2.5mm.
• A padded strap, there will be a thickness of 5 to 6mm at the LUGS, thinning towards the tail of the strap by 2-2.5mm depending on the size of the strap.

I ordered the (slim) Butero Tan Leather Strap in a size 115/70 mm. It was 3.2 mm thick at the lugs. The buckle was way off to the left side. I moved the buckle from 12 to 6 o'clock, and this centered the buckle. Japanamse watches (Seiko) use 6 o'clock. This strap makes the face of the Sanda 9031 watch pop. It now looks expensive.

References:

1. Amazon Vinacreation .
2. Veblenist.com - Shell Cordvan ($130). Starting at $95.